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

@inproceedings{DEmic2012TheBO,
  title={The Beginning of the Sauropod Dinosaur Hiatus in North America: Insights from the Lower Cretaceous Cloverly Formation of Wyoming},
  author={Michael D. D’Emic and Brady Z. Foreman},
  year={2012}
}
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 to previous hypotheses that it was a brachiosaurid, we assert that Sauroposeidon is a member of the Somphospondyli on the basis of numerous features. Thus, the mid-Cretaceous disappearance of sauropods from the North American fossil record concerned both brachiosaurids and somphospondylans. We find… 
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  • P. Mannion
  • Geography, Environmental Science
    PeerJ
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End of sauropod dinosaur hiatus in North America
Revision of the sauropod dinosaurs of the Lower Cretaceous Trinity Group, southern USA, with the description of a new genus
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Cladistic analysis indicates that Astrophocaudia and Sauroposeidon are members of Somphospondyli, whereas Cedarosaurus is a brachiosaurid.
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Abstract Sauroposeidon proteles, a new brachiosaurid sauropod, is represented by an articulated series of four mid-cervical vertebrae recovered from the Antlers Formation (Aptian–Albian) of
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TLDR
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