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An Acad Bras Cienc. 2011 Mar;83(1):247-65.

Titanosauriform teeth from the Cretaceous of Japan.

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  • 1Museum of Nature and Human Activities, Yayoigaoka 6, Sanda, Hyogo, Japan.


Sauropod teeth from six localities in Japan were reexamined. Basal titanosauriforms were present in Japan during the Early Cretaceous before Aptian, and there is the possibility that the Brachiosauridae may have been included. Basal titanosauriforms with peg-like teeth were present during the "mid" Cretaceous, while the Titanosauria with peg-like teeth was present during the middle of Late Cretaceous. Recent excavations of Cretaceous sauropods in Asia showed that multiple lineages of sauropods lived throughout the Cretaceous in Asia. Japanese fossil records of sauropods are conformable with this hypothesis.

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