Caieiria (named after the Caieira locality where its fossils were recovered) is a genus of titanosaurian dinosaur from the Late Cretaceous Serra da Galga Formation (formerly a unit of the Marília Formation) of Brazil. The type and only species is Caieiria allocaudata.
Caieiria (named after the Caieira locality where its fossils were recovered) is a genus of titanosaurian dinosaur from the Late Cretaceous Serra da Galga Formation (formerly a unit of the Marília Formation) of Brazil. The type and only species is Caieiria allocaudata.
==Discovery and naming== From the 1940s to 1960s, the paleontologist Llewellyn Ivor Price excavated several series of titanosaur fossils in the "Caieira" locality of the Serra da Galga Formation in Minas Gerais, Brazil and he discovered the holotype of Caieiria around 1957. Two of these, "Series B" or MCT 1488-R and "Series C" or MCT 1490-R, have been named the holotypes of two titanosaur genera: Trigonosaurus and Baurutitan respectively. The describers of Trigonosaurus also referred a series of ten caudal vertebrae, MCT 1719-R, as the paratype of their new genus. Further titanosaurs from the BR-262 site of the same locality were reported by Silva Junior and colleagues in 2022, and in light of this new evidence, reconsidered MCT 1488-R to be a specimen of Baurutitan and thus synonymized Trigonosaurus with it. They also separated the tail from Trigonosaurus and named it as the holotype of a new genus and species, Caieiria allocaudata. The generic name "Caieiria" honors the Caieira locality while the specific name "allocaudata" means "strange tail", referring to its unusual anatomy.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).