ScRaBBlE: Titanosauriformes

Showing posts with label Titanosauriformes. Show all posts

Wednesday, March 20, 2019

[Paleontology • 2018] Sibirotitan astrosacralis • A New Sauropod dinosaur from the Lower Cretaceous Ilek Formation, Western Siberia, Russia ---ScRaBBlE

Sibirotitan astrosacralis

Averianov, Ivantsov, Skutschas, Faingertz & Leshchinskiy, 2018

Сибиротитан звездокрестцовый DOI: 10.1016/j.geobios.2017.12.004

Abstract

Sibirotitan astrosacralis nov. gen., nov. sp., is described based on isolated but possibly associated cervical and dorsal vertebrae, sacrum, and previously published pedal elements from the Lower Cretaceous (Barremian?) Ilek Formation at Shestakovo 1 locality (Kemerovo Province, Western Siberia, Russia). Some isolated sauropod teeth from the Shestakovo 1 locality are referred to the same taxon. The phylogenetic parsimony analyses place Sibirotitan astrosacralis nov. gen., nov. sp., as a non-titanosaurian somphospondyl titanosauriform. The new taxon exhibits four titanosauriform and one somphospondylan synapomorphies, and one autapomorphy – a hyposphene ridge that extends between the neural canal and the postzygapophyses. It differs from all other Somphospondyli by having only five sacral vertebrae. The new taxon shares with Euhelopus and Epachtosaurus sacral ribs that converge towards the middle of the sacrum in dorsal view. Sibirotitan astrosacralis nov. gen., nov. sp., is only the second sauropod taxon from Russia and one of the oldest titanosauriform described so far in Asia.

Keywords: Sibirotitan astrosacralis nov. gen., nov. sp.; Titanosauriformes; Sauropoda; Phylogenetic parsimony analysis; Early Cretaceous; Siberia; Asia

Dinosauria Owen, 1842

Saurischia Seeley, 1887

Sauropoda Marsh, 1878

Titanosauriformes Salgado et al., 1997

Genus Sibirotitan nov. gen.

Derivation of the name: from Siberia and Greek Tιτάν (titan), a member of the second order of divine beings, descended from the primordial deities and preceding the Olympian deities in Greek mythology.

Type and only species: Sibirotitan astrosacralis nov. gen., nov. sp.

Derivation of the name: from Greek αστρον (star) and Latin os sacrum (“sacred bone”), an allusion to the unusual configuration of sacral ribs which radiate, in dorsal view, from the middle of the sacrum as the rays of a star.

S.V. Ivantsov digging out the posterior cervical vertebra PM TGU 120/8-Sh1-3 from the Malyi Yar outcrop in 2008 (Kemerovo Province, Russia). Photo by S.V. Leshchinskiy.

Alexander Averianov, Stepan Ivantsov, Pavel Skutschas, Alexey Faingertz and Sergey Leshchinskiy. 2018. A New Sauropod dinosaur from the Lower Cretaceous Ilek Formation, Western Siberia, Russia. Geobios. In Press. DOI: 10.1016/j.geobios.2017.12.004

Averianov, A.O., Voronkevich, A.V., Maschenko, E.N., Leshchinskiy, S.V., and Fayngertz, A.V. 2002. A sauropod foot from the Early Cretaceous of Western Siberia, Russia. Acta Palaeontologica Polonica. 47 (1): 117–124. DOI: 10.1.1.492.1575

Hello to the Sibirosaurus? New dinosaur discovered by university scientists http://siberiantimes.com/science/casestudy/news/n0167-hello-to-the-sibirosaurus-new-dinosaur-discovered-by-university-scientists

Познакомьтесь с новым сибирским динозавром https://metkere.com/2018/01/sibirotitan.html via @metkere

Новый род найденных в Кузбассе динозавров назвали сибиротитаном https://mediakuzbass.ru/news/obshhestvo/94522.html

facebook.com/mediakuzbass/photos/1397477943695761

facebook.com/zakuzbass/posts/1997963993799281

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

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شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا
شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.

[Paleontology • 2017] Europatitan eastwoodi • A New Sauropod from the lower Cretaceous of Iberia in the Initial Radiation of Somphospondylans in Laurasia ---ScRaBBlE

Europatitan eastwoodi

Fernández-Baldor, Canudo, Pedro Huerta, Moreno-Azanza & Montero, 2017

. DOI: 10.7717/peerj.3409

Abstract

The sauropod of El Oterillo II is a specimen that was excavated from the Castrillo de la Reina Formation (Burgos, Spain), late Barremian–early Aptian, in the 2000s but initially remained undescribed. A tooth and elements of the axial skeleton, and the scapular and pelvic girdle, represent it. It is one of the most complete titanosauriform sauropods from the Early Cretaceous of Europe and presents an opportunity to deepen our understanding of the radiation of this clade in the Early Cretaceous and study the paleobiogeographical relationships of Iberia with Gondwana and with other parts of Laurasia. The late Barremian–early Aptian is the time interval in the Cretaceous with the greatest diversity of sauropod taxa described in Iberia: two titanosauriforms, Tastavinsaurus and Europatitan; and a rebbachisaurid, Demandasaurus. The new sauropod Europatitan eastwoodi n. gen. n. sp. presents a series of autapomorphic characters in the presacral vertebrae and scapula that distinguish it from the other sauropods of the Early Cretaceous of Iberia. Our phylogenetic study locates Europatitan as the basalmost member of the Somphospondyli, clearly differentiated from other clades such as Brachiosauridae and Titanosauria, and distantly related to the contemporaneous Tastavinsaurus. Europatitan could be a representative of a Eurogondwanan fauna like Demandasaurus, the other sauropod described from the Castrillo de la Reina Formation. The presence of a sauropod fauna with marked Gondwananan affinities in the Aptian of Iberia reinforces the idea of faunal exchanges between this continental masses during the Early Cretaceous. Further specimens and more detailed analysis are needed to elucidate if this Aptian fauna is caused by the presence of previously unnoticed Aptian land bridges, or it represents a relict fauna from an earlier dispersal event.

Figure 10: First caudal vertebra (MDS-OTII,2) of Europatitan eastwoodi n. gen. n. sp.
(A) Anterior view. (B) Right lateral view. (C) Posterior view. (D) Dorsal view. (E) Ventral view.

ACDL, anterior centrodiapophyseal lamina; POSZG, postzygapophyses; PRDL, prezygodiapophyseal lamina; PRZG, prezygapophyses; SPOL, spinopostzygapophyseal lamina; SPRL, spinoprezygapophyseal lamina. Scale: 10 cm.

Figure 2: Quarry map of the partial skeleton of Europatitan eastwoodi n. gen. n. sp. from the late Barremian–early Aptian, Early Cretaceous, of El Oterillo II site, Spain.

The arrow indicates an iguanodontoid ilium (Contreras et al., 2007). Circular symbols correspond to splinters, and triangles to isolated teeth of theropods.

illustration: Davide Bonadona

Order SAURISCHIA Seeley, 1887

Infraorder SAUROPODA Marsh, 1878

NEOSAUROPODA Bonaparte, 1986

Titanosauriformes Salgado, Coria & Calvo, 1997

Somphospondyli Wilson & Sereno, 1998

Genus Europatitan gen. nov.

Etymology: In reference to Europe, the continent where it was found, and the titans, ancient Greek deities known for their gigantic size, endowed with great power.

Type Species: Europatitan eastwoodi sp. nov.

Etymology: Dedicated to US actor Clint Eastwood, the protagonist of the film “The Good, the Bad and the Ugly,” which was partially filmed near Salas de los Infantes.

Type Locality and Horizon: The site of El Oterillo II is located in the province of Burgos in northern Spain, 2.5 km to the west of the village of Barbadillo del Mercado in Salas de los Infantes (Fig. 1), Burgos Province, Spain; Urbión Group, Castrillo de la Reina Fm., lower Cretaceous, regarded as late Barremian–early Aptian in age (Martín-Closas & Alonso Millán, 1998).

Holotype: MDS-OTII,1 to MDS-OTII-32. The disarticulated carcass of a single specimen consisting of the following material: one tooth, five cervical vertebrae, one dorsal vertebra, nine caudal vertebrae, 11 cervical ribs, five dorsal ribs, seven hemal arches, the two scapulae, the left coracoid, the left metacarpals I and III, the two pubes, and the two ischia.

.....

Fidel Torcida Fernández-Baldor, José Ignacio Canudo, Pedro Huerta, Miguel Moreno-Azanza and Diego Montero. 2017. Europatitan eastwoodi, A New Sauropod from the lower Cretaceous of Iberia in the Initial Radiation of Somphospondylans in Laurasia.

PeerJ. 5:e3409. DOI: 10.7717/peerj.3409

El Europatitan eastwoodi, un nuevo saurópodo hallado en la Sierra de La Demanda... http://burgosconecta.es/2017/06/28/el-europatitan-eastwoodi-el-nuevo-sauropodo-hallado-en-la-sierra-de-la-demanda/ via @burgosconecta @gabi_iglesia

http://www.salasdelosinfantes.net/content/europatitan-eastwoodi-un-nuevo-dinosaurio-con-un-enorme-cuello-descrito-en-la-sierra-de-la

https://fundaciondinosaurioscyl.blogspot.com/2017/06/europatitan-eastwoodi-un-nuevo.html

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

[Paleontology • 2017] Reappraisal of Austrosaurus mckillopi Longman, 1933 from the Allaru Mudstone of Queensland, Australia’s First Named Cretaceous Sauropod Dinosaur ---ScRaBBlE

Reconstruction of the possible sequence of events that led to the preservation of the carcass of the sauropod Austrosaurus mckillopi in the Eromanga Sea.
(A) Austrosaurus as a living animal on land; (B) freshly deceased Austrosaurus prior to bloating; (C) bloated Austrosaurus carcass washed out to sea, where it was possibly scavenged by marine reptiles like Kronosaurus; (D) the partially defleshed but still effectively intact thoracic portion of the Austrosaurus carcass is picked at by sharks as it sinks to the seafloor; (E) the thoracic portion of the Austrosaurus carcass is buried along with several ammonites (Beudanticeras) and bivalves (Inoceramus), which were possibly drawn to the carcass as it decayed.

Reconstruction by Travis R. Tischler.

Poropat, Nair, Syme, et al. 2017. Reappraisal of Austrosaurus mckillopi Longman, 1933. ... DOI: 10.1080/03115518.2017.1334826

Austrosaurus mckillopi was the first Cretaceous sauropod reported from Australia, and the first Cretaceous dinosaur reported from Queensland (northeast Australia). This sauropod taxon was established on the basis of several fragmentary presacral vertebrae (QM F2316) derived from the uppermost Lower Cretaceous (upper Albian) Allaru Mudstone, at a locality situated 77 km west-northwest of Richmond, Queensland. Prior to its rediscovery in 2014, the type site was considered lost after failed attempts to relocate it in the 1970s. Excavations at the site in 2014 and 2015 led to the recovery of several partial dorsal ribs and fragments of presacral vertebrae, all of which clearly pertained to a single sauropod dinosaur. The discovery of new material of the type individual of Austrosaurus mckillopi, in tandem with a reassessment of the material collected in the 1930s, has facilitated the rearticulation of the specimen. The resultant vertebral series comprises six presacral vertebrae—the posteriormost cervical and five anteriormost dorsals—in association with five left dorsal ribs and one right one. The fragmentary nature of the type specimen has historically hindered assessments of the phylogenetic affinities of Austrosaurus, as has the fact that these evaluations were often based on a subset of the type material. The reappraisal of the type series of Austrosaurus presented herein, on the basis of both external morphology and internal morphology visualized through CT data, validates it as a diagnostic titanosauriform taxon, tentatively placed in Somphospondyli, and characterized by the possession of an accessory lateral pneumatic foramen on dorsal vertebra I (a feature that appears to be autapomorphic) and by the presence of a robust ventral mid-line ridge on the centra of dorsal vertebrae I and II. The interpretation of the anteriormost preserved vertebra in Austrosaurus as a posterior cervical has also prompted the re-evaluation of an isolated, partial, posterior cervical vertebra (QM F6142, the ‘Hughenden sauropod’) from the upper Albian Toolebuc Formation (which underlies the Allaru Mudstone). Although this vertebra preserves an apparent unique character of its own (a spinopostzygapophyseal lamina fossa), it is not able to be referred unequivocally to Austrosaurus and is retained as Titanosauriformes indet. Austrosaurus mckillopi is one of the oldest known sauropods from the Australian Cretaceous based on skeletal remains and potentially provides phylogenetic and/or palaeobiogeographic context for later taxa such as Wintonotitan wattsi, Diamantinasaurus matildae and Savannasaurus elliottorum.

Fig. 11. Reconstruction of the possible sequence of events that led to the preservation of the carcass of the sauropod Austrosaurus mckillopi in the Eromanga Sea. (A) Austrosaurus as a living animal on land; (B) freshly deceased Austrosaurus prior to bloating; (C) bloated Austrosaurus carcass washed out to sea, where it was possibly scavenged by marine reptiles like Kronosaurus; (D) the partially defleshed but still effectively intact thoracic portion of the Austrosaurus carcass is picked at by sharks as it sinks to the seafloor; (E) the thoracic portion of the Austrosaurus carcass is buried along with several ammonites (Beudanticeras) and bivalves (Inoceramus), which were possibly drawn to the carcass as it decayed.

Reconstruction by Travis R. Tischler.

Conclusion:

The sauropod taxon Austrosaurus mckillopi is of historical significance to Australian palaeontology as the first Cretaceous dinosaur recognized in Queensland, and the first Cretaceous sauropod ever reported from the entire continent. The augmentation, articulation and description of the type material have helped to shed light on the phylogenetic position of Austrosaurus, unequivocally placing it within Titanosauriformes, and probably as a member of Somphospondyli. The identification of an autapomorphic auxiliary pneumatic foramen in dorsal vertebra I means that the referral of other sauropod specimens to Austrosaurus should be possible in the future, although this feature is not presently observable in any other Australian sauropod specimen. The morphological congruence of the posteriormost cervical vertebra of Austrosaurus with QM F6142 (the ‘Hughenden sauropod’) might represent grounds for the referral of the latter to the former, although this can not be demonstrated unequivocally. Lastly, despite its fragmentary nature, Austrosaurus appears to share several features with the type specimens of both Diamantinasaurus and Savannasaurus, possibly indicating a close phylogenetic relationship.

The fragmentary nature of the type series of Austrosaurus has impeded, and will continue to restrict, efforts to precisely resolve its phylogenetic position within Titanosauriformes. Consequently, the palaeobiogeographic significance of Austrosaurus is poorly understood, a situation worsened by the relative rarity of Early Cretaceous titanosauriforms in South America and the lack of such in Antarctica. Nevertheless, the presence of numerous titanosauriform lineages in the Early Cretaceous of South America provides some context for Australian Early Cretaceous titanosauriforms like Austrosaurus, and also for the mid-Cretaceous Winton Formation fauna, which appears to have been dominated by titanosaurs with amphicoelous (rather than procoelous) caudal vertebrae.

Stephen F. Poropat, Jay P. Nair, Caitlin E. Syme, Philip D. Mannion, Paul Upchurch, Scott A. Hocknull, Alex G. Cook, Travis R. Tischler and Timothy Holland. 2017. Reappraisal of Austrosaurus mckillopi Longman, 1933 from the Allaru Mudstone of Queensland, Australia’s First Named Cretaceous Sauropod Dinosaur. Alcheringa: An Australasian Journal of Palaeontology. DOI: 10.1080/03115518.2017.1334826

twitter.com/taphovenatrix/status/890381395851304960/photo

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

[Paleontology • 2017] Vouivria damparisensis • The Earliest Known Titanosauriform Sauropod Dinosaur from France and the Evolution of Brachiosauridae ---ScRaBBlE

Vouivria damparisensis

Mannion, Allain & Moine, 2017

DOI: 10.7717/peerj.3217

Abstract

Brachiosauridae is a clade of titanosauriform sauropod dinosaurs that includes the well-known Late Jurassic taxa Brachiosaurus and Giraffatitan. However, there is disagreement over the brachiosaurid affinities of most other taxa, and little consensus regarding the clade’s composition or inter-relationships. An unnamed partial sauropod skeleton was collected from middle–late Oxfordian (early Late Jurassic) deposits in Damparis, in the Jura department of eastern France, in 1934. Since its brief description in 1943, this specimen has been informally known in the literature as the ‘Damparis sauropod’ and ‘French Bothriospondylus’, and has been considered a brachiosaurid by most authors. If correctly identified, this would make the specimen the earliest known titanosauriform. Coupled with its relatively complete nature and the rarity of Oxfordian sauropod remains in general, this is an important specimen for understanding the early evolution of Titanosauriformes. Full preparation and description of this specimen, known from teeth, vertebrae and most of the appendicular skeleton of a single individual, recognises it as a distinct taxon: Vouivria damparisensis gen. et sp. nov. Phylogenetic analysis of a data matrix comprising 77 taxa (including all putative brachiosaurids) scored for 416 characters recovers a fairly well resolved Brachiosauridae. Vouivria is a basal brachiosaurid, confirming its status as the stratigraphically oldest known titanosauriform. Brachiosauridae consists of a paraphyletic array of Late Jurassic forms, with Europasaurus, Vouivria and Brachiosaurus recovered as successively more nested genera that lie outside of a clade comprising (Giraffatitan + Sonorasaurus) + (Lusotitan + (Cedarosaurus + Venenosaurus)). Abydosaurus forms an unresolved polytomy with the latter five taxa. The Early Cretaceous South American sauropod Padillasaurus was previously regarded as a brachiosaurid, but is here placed within Somphospondyli. A recent study contended that a number of characters used in a previous iteration of this data matrix are ‘biologically related’, and thus should be excluded from phylogenetic analysis. We demonstrate that almost all of these characters show variation between taxa, and implementation of sensitivity analyses, in which these characters are excluded, has no effect on tree topology or resolution. We argue that where there is morphological variation, this should be captured, rather than ignored. Unambiguous brachiosaurid remains are known only from the USA, western Europe and Africa, and the clade spanned the Late Jurassic through to the late Albian/early Cenomanian, with the last known occurrences all from the USA. Regardless of whether their absence from the Cretaceous of Europe, as well as other regions entirely, reflects regional extinctions and genuine absences, or sampling artefacts, brachiosaurids appear to have become globally extinct by the earliest Late Cretaceous.

Systematic Paleontology

Sauropoda Marsh, 1878
Eusauropoda Upchurch, 1995
Neosauropoda Bonaparte, 1986
Macronaria Wilson & Sereno, 1998

Titanosauriformes Salgado, Coria & Calvo, 1997
Brachiosauridae Riggs, 1904

Vouivria n. gen.
Vouivria damparisensis n. sp.

Bothriospondylus madagascariensis Lapparent, 1943

Damparis dinosaur Buffetaut, 1988

French “Bothriospondylus madagascariensis” McIntosh, 1990

Bothriospondylus madagascariensis Wilson, 2002

Damparis sauropod Allain, Pereda & Suberbiola, 2003

Brachiosauridae indet. Mannion, 2010

‘French Bothriospondylus’/Damparis sauropod D’Emic, 2012

‘French Bothriospondylus’ Mannion et al., 2013

Etymology: The generic name is derived from the old French word ‘vouivre’, itself from the Latin ‘vipera’, meaning ‘viper’. In Franche-Comté, the region in which the holotype was discovered, ‘la vouivre’ (=the wyvern) is a legendary winged reptile. In the homonym novel written by the great French author Marcel Aymé, ‘La Vouivre’ is a beautiful woman who lives in the swamps in the neighbourhood of Dôle (Franche-Comté) and protects a spectacular ruby. The specific name is derived from Damparis, the type locality of the new taxon.

Conclusions:

A detailed redescription of a long-neglected sauropod specimen from the middle–late Oxfordian (Late Jurassic) of eastern France recognises it as a distinct brachiosaurid, Vouivria damparisensis n. gen. n. sp., that is the stratigraphically oldest known occurrence of Titanosauriformes. An expanded and revised phylogenetic analysis includes the dwarfed Late Jurassic European taxon Europasaurus within Brachiosauridae, but places the Early Cretaceous Colombian genus Padillasaurus within Somphospondyli. The past distribution of Brachiosauridae is currently restricted to Europe, North America and Africa, and the clade appears to have become globally extinct by the earliest Late Cretaceous.

Philip D. Mannion, Ronan Allain and Olivier Moine. 2017. The Earliest Known Titanosauriform Sauropod Dinosaur and the Evolution of Brachiosauridae. PeerJ. 5:e3217. DOI: 10.7717/peerj.3217

Earliest relative of Brachiosaurus dinosaur found in France http://www3.imperial.ac.uk/newsandeventspggrp/imperialcollege/newssummary/news_27-4-2017-13-43-8

BBC News - Fossil sheds light on 'Jurassic Park' dinosaurs http://www.bbc.com/news/science-environment-39771719

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

من هنا

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من هنا

شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

[Paleontology • 2017] Soriatitan golmayensis • A New Brachiosauridae Sauropod Dinosaur from the lower Cretaceous of Europe (Soria Province, Spain) ---ScRaBBlE

Soriatitan golmayensis

Royo-Torres, Fuentes, Meijide, Meijide-Fuentes & Meijide-Fuentes, 2017

DOI: 10.1016/j.cretres.2017.08.012

Abstract

A new dinosaur sauropod from the Golmayo Formation (upper Hauterivian-lower Barremian) in Soria province (Spain) is described as Soriatitan golmayensis gen. et sp. nov. The new material consists of one tooth, three dorsal vertebrae with ribs, a partial sacrum, five caudal centra, two caudal vertebral spines, one chevron, a humerus, an ulna, a radius, two partial ilia, two ischia, a fragment of pubis, and a partial femur. Cladistic analysis identified the material as belonging to Brachiosaruidae within Titanosauriformes. Sauropod material from the Golmayo Formation shares a diagnostic feature with Abydosaurus, Cedarosaurus, Tastavinsaurus and Venenosaurus including anteriorly deflected anterior–middle caudal neural spines and with Cedarosaurus a proximodistally straight lateral margin between the proximal head and the shaft of the humerus. Eight characters are potential autapomorphies in the sauropod from Spain, including the presence of a large rectangular ventral ridge below the preacetabular process of the ilium, the same length of the pubic and ischiadic blades in the ischium, and two lateral ridges in the lateral area of the deltopectoral crest of the humerus. The presence of Early Cretaceous brachiosarids in both, North America and Europe, give support to the hypothesis of a connection between the tectonic plates of these continents at some point during the Early Cretaceous.

Keywords: Soriatitan golmayensis; Golmayo Formation; Hauterivian-Barremian; Brachiosauridae; Sauropod; Europe; North America

Systematic palaeontology

Saurischia Seeley, 1887
Sauropoda Marsh, 1878
Neosauropoda Bonaparte, 1986

Titanosauriformes Salgado, Coria & Calvo, 1997
Brachiosauridae Riggs, 1904

Soriatitan gen. nov.
Etymology: From the Spanish province Soria where the dinosaur was found and from the Greek “titan” meaning giant in Greek mythology.

Soriatitan golmayensis sp. nov.

Etymology: In honor of the Golmayo village where the Zorralbo I site is located.

Conclusions:

This study describes a new species of sauropod, Soriatitan golmayensis (MNS 2001/122) from the Golmayo Formation (upper Hauterivian–lower Barremian) located in Zorralbo I site in Golmayo village (Soria, Spain). This sauropod is classified as a Brachiosauridae within Titanosauriformes supported by two different phylogenetic analyses. Soriatitan shares the presence of anteriorly deflected anterior–middle caudal neural spines with Cedarosaurus, Venenosaurus and Tastavinsaurus, and a proximodistally straight lateral margin between the proximal head and the humerus shaft with Cedarosaurus. Eight characters are newly identified and are considered potential diagnostic criteria for the new possible genus and species: the caudal ribs develop a pointed anterior ridge in the middle; posterior caudal vertebra with large postzygapophyses; presence of a lateral fossa in every postzygapophysis in the posterior caudal vertebra; the presence of a rectangular ventral ridge cranial to the pubic process and below the preacetabular process in the ilium; ischiadic peduncle in the ilium three times longer in lateromedially than anteropospestiorly; the same length of the pubic peduncle and distal blade in the ischia; two lateral ridges in the lateral area of the deltopectoral crest; and the presence of the two ridges in the medial projection of the humerus head. At the moment, Soriatitan golmayensis is the first and the only brachiosarid described from the Early Cretaceous of Europe. The presence of the Early Cretaceous brachiosarid sauropods common to North America and Europe support to the presence of a possible bridge between these plates, prior to the late Hauterivian–Barremian.

Rafael Royo-Torres, Carolina Fuentes, Manuel Meijide, Federico Meijide-Fuentes and Manuel Meijide-Fuentes. 2017. A New Brachiosauridae Sauropod Dinosaur from the lower Cretaceous of Europe (Soria Province, Spain). Cretaceous Research. 80; 38–55. DOI: 10.1016/j.cretres.2017.08.012

Soriatitan golmayensis, un nuevo dinosaurio español localizado en Golmayo elmirondesoria.es/provincia/comarca-de-soria/soriatitan-golmayensis-un-nuevo-dinosaurio-espanol-localizado-en-golmayo

Identificado en Soria un nuevo saurópodo de más de 13 metros de longitud: diariosigloxxi.com/texto-ep/mostrar/20170907150739/identificado-soria-nuevo-sauropodo-13-metros-longitud

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

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شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

[Paleontology • 2017] Moabosaurus utahensis • A New Sauropod From The Early Cretaceous (Aptian) of North America ---ScRaBBlE

Moabosaurus utahensis

Britt, Scheetz, Whiting & Wilhite, 2017

deepblue.lib.umich.edu/handle/2027.42/136227

Abstract

The Early Cretaceous was a time of dramatic change for sauropod dinosaurs in North America. Between the Late Jurassic-aged Morrison Formation and overlying Early Cretaceous strata, there was a dramatic decline in sauropod diversity. Here, we describe a new sauropod that adds to the diversity of the Early Cretaceous, from strata that can be no older than the early Aptian, (125 Ma) some 25 million years younger than the Morrison Formation.

Moabosaurus utahensis, n. gen., n. sp., is diagnosed in part by the following suite of characters: axially thin ventral basioccipital with posteriorly sweeping basal tubera; low-spined cervical vertebrae with neural spines that range from shallowly notched on anterior cervical vertebrae to shallow, but widely notched on middle and some posterior cervical vertebrae; posterior cervical and anterior dorsal neural spines with extremely low, axially thin, laterally wide ridges at the level of the zygapophyses; some cervical ribs with bifid posterior shafts; anterior and posterior caudal vertebrae with strongly procoelous centra, middle caudal vertebrae with mildly procoelous centra, and distal caudal vertebrae with moderately-to-strongly procoelous centra.

To determine the phylogenetic position of Moabosaurus we utilized three different datasets and performed four analyses. All results are in agreement that Moabosaurus is a neosauropod. The two most resolved trees indicate it is a macronarian, specifically a basal titanosauriform. The thick-walled, camerate presacral vertebrae and other characters, however, preclude a more highly nested position of Moabosaurus within either Titanosauriformes, which is characterized by moderately camellate presacral vertebrae, or Somphospondyli, which is characterized by fully camellate presacral vertebrae, including the neural arches. Incorporation of these and other characters, particularly those shared with Turiasaurus and Tendaguria, into phylogenetic analyses will help resolve the interrelationships of Moabosaurus with other neosauropods.

FIGURE 36 — Moabosaurus utahensis skeletal mount.
A composite of the holotypic dorsal vertebrae (BYU 14387) and referred elements plus a skull of Camarasaurus. The skeleton is 9.75 m long.

B.B. Britt, R.D. Scheetz, M.F. Whiting and D.R. Wilhite. 2017. Moabosaurus utahensis, n. gen., n. sp., A New Sauropod From The Early Cretaceous (Aptian) of North America. Contributions from the Museum of Paleontology, University of Michigan. 32(11); 189–243. deepblue.lib.umich.edu/handle/2027.42/136227

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روابط التحميل والمشاهدة، الروابط المباشرة للتحميل

من هنا

او

من هنا

شاهد هذا الفيديو القصير لطريقة التحميل البسيطة

منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات

كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا

شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا

تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا

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[Paleontology • 2017] Moabosaurus utahensis • A New Sauropod From The Early Cretaceous (Aptian) of North America ---ScRaBBlE

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