Anatomy, systematics, paleoenvironment, growth, and age of the sauropod dinosaur Sonorasaurus thompsoni from the Cretaceous of Arizona, USA

@article{DEmic2016AnatomySP,
  title={Anatomy, systematics, paleoenvironment, growth, and age of the sauropod dinosaur Sonorasaurus thompsoni from the Cretaceous of Arizona, USA},
  author={Michael D. D’Emic and Brady Z. Foreman and Nathan A. Jud},
  journal={Journal of Paleontology},
  year={2016},
  volume={90},
  pages={102 - 132}
}
Abstract Sauropod dinosaurs are rare in the Cretaceous North American fossil record in general and are absent from that record for most of the Late Cretaceous. Sonorasaurus thompsoni from the Turney Ranch Formation of the Bisbee Group of Arizona, USA, potentially represents one of the youngest sauropods before their ca. 30-million-year-long hiatus from the record. The anatomy of Sonorasaurus has only been briefly described, its taxonomic validity has been questioned, several hypotheses have… 

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References

SHOWING 1-10 OF 136 REFERENCES

NEW CRETACEOUS BRACHIOSAURID DINOSAUR, SONORASAURUS THOMPSONI GEN, ET SP. NOV, FROM ARIZONA

TLDR
The specimen described herein shows some clear brachiosaurid homologies that are both distinctly different from Pleurocoelus and from brachesaurids phylogenetically closer to the type Upper Jurassic Brachiosaurus, and a new taxonomic designation at the genus level is warranted.

A Sauropod Dinosaur Pes from the Latest Cretaceous of North America and the Validity of Alamosaurus sanjuanensis (Sauropoda, Titanosauria)

ABSTRACT Complete sauropod pedes are rare in the fossil record, which has limited their use in systematics. We describe a nearly complete, large sauropod pes from the Maastrichtian-age Naashoibito

Reassessment of the sauropod dinosaur Jainosaurus (= "Antarctosaurus") septentrionalis from the Upper Cretaceous of India

Early evaluations of sauropod diversity in the Cretaceous of India recognized three genera, “Titanosaurus,” Antarctosaurus, and Laplatasaurus, each of which was thought to have closely related

Postcranial axial skeleton of Europasaurus holgeri (Dinosauria, Sauropoda) from the Upper Jurassic of Germany: implications for sauropod ontogeny and phylogenetic relationships of basal Macronaria

TLDR
The postcranial axial skeleton of sauropods is extremely modified with respect to the anatomy observed in its ancestors, the ‘prosauropods’, proving to be one of the most informative regions of the body.

Revision of the sauropod dinosaurs of the Lower Cretaceous Trinity Group, southern USA, with the description of a new genus

TLDR
Cladistic analysis indicates that Astrophocaudia and Sauroposeidon are members of Somphospondyli, whereas Cedarosaurus is a brachiosaurid.

Osteology of the Late Jurassic Portuguese sauropod dinosaur Lusotitan atalaiensis (Macronaria) and the evolutionary history of basal titanosauriforms

TLDR
The results support the generic separation of the contemporaneous taxa Brachiosaurus, Giraffatitan, and Lusotitan, with the latter recovered as either a brachiosaurid or the sister taxon to Titanosauriformes.

The Beginning of the Sauropod Dinosaur Hiatus in North America: Insights from the Lower Cretaceous Cloverly Formation of Wyoming

ABSTRACT We redescribe and present newly excavated sauropod material from the Lower Cretaceous Cloverly Formation of Wyoming that we refer to the titanosauriform Sauroposeidon proteles. In contrast

Osteology of Huabeisaurus allocotus (Sauropoda: Titanosauriformes) from the Upper Cretaceous of China

TLDR
A detailed redescription of Huabeisaurus allocotus is presented and a suite of anatomical comparisons with other titanosauriforms that demonstrate its validity via autapomorphies are presented, suggesting that euhelopodids exemplified a comparably broad range of feeding strategies and perhaps diets.

A New Sauropod: Tastavinsaurus Sanzi Gen. Et Sp. Nov. from the Early Cretaceous (Aptian) of Spain

TLDR
In the cladistic analysis, Tastavinsaurus is the sister-taxon of the North American Venenosaurus within Titanosauriformes, which includes the Brachiosauridae, Somphospondyli, and Titanosaurusia.

Cranial anatomy of the Late Jurassic dwarf sauropod Europasaurus holgeri (Dinosauria, Camarasauromorpha): ontogenetic changes and size dimorphism

TLDR
All the autapomorphic characters of Europasaurus recognized in the skull are considered to have evolved through paedomorphosis, which resulted in the dwarf condition of this taxon.
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