Caieiria
Caieiria is a genus of titanosaurian dinosaur discovered in Brazil and named for the Caieira locality where its fossils were found. The type species, Caieiria allocaudata, is distinguished by unusual tail vertebrae with robust, vertically expanded side processes and deep excavations in its front tail vertebrae.
Key Facts
- ›Caieiria is a titanosaurian dinosaur from Brazil.
- ›The only known species is Caieiria allocaudata.
- ›Fossils were recovered from the Serra da Galga Formation.
- ›It is distinguished by unique features of its tail vertebrae.
- ›Caieiria is classified within the Aeolosaurini tribe of titanosaurs.
- Titanosaurian dinosaur
- Distinguished by unusual tail vertebrae with vertically expanded side processes
- Front tail vertebrae have deep excavations between laminae
Baurutitan Britoi, Uberabatitan Ribeiroi, Gondwanatitan Faustoi
Brazil
About Caieiria
Caieiria: A Titanosaur from Brazil
Caieiria is a genus of titanosaurian dinosaur that lived during the Late Cretaceous period in what is now Brazil. The type and only species, Caieiria allocaudata, was named in 2022 by Silva Junior and colleagues. Its generic name, "Caieiria," honors the Caieira locality, a significant fossil site in Minas Gerais where its remains were unearthed. The specific epithet, "allocaudata," translates to "strange tail," a description reflecting the unusual anatomical features of its caudal vertebrae.
Discovery and Distinctive Features
The fossils attributed to Caieiria were originally excavated by Llewellyn Ivor Price between the 1940s and 1960s from the Serra da Galga Formation. Further examination and new evidence led to the reclassification of some previously assigned specimens. Caieiria is distinguished from other closely related titanosaurs, such as Baurutitan britoi and Gondwanatitan faustoi, by specific characteristics of its tail vertebrae. These include robust side processes that are vertically expanded to nearly half the height of their centra, and a deep excavation present in the front tail vertebrae between the lamina postzygapophysealis and the lamina centrodiapophysealis.
Classification and Paleoenvironment
Phylogenetic analyses place Caieiria within the titanosaurian clade, specifically at the base of the Aeolosaurini tribe, which itself is situated within the broader Rinconsauria group. The Serra da Galga Formation, where Caieiria fossils were found, was once considered part of the Marília Formation. This ancient environment was home to a diverse fauna, including other dinosaurs like Baurutitan and the unenlagiine theropod Ypupiara, as well as various crocodylomorphs such as Itasuchus, Peirosaurus, and Uberabasuchus.
Source: Wikipedia ↗
Frequently Asked Questions
What does the name Caieiria mean?
The genus name 'Caieiria' honors the Caieira locality in Brazil where its fossils were discovered. The specific name 'allocaudata' means 'strange tail' in reference to its unusual tail anatomy.
Where were Caieiria fossils found?
Fossils of Caieiria were discovered in the Caieira locality, which is part of the Serra da Galga Formation in Minas Gerais, Brazil.
What are the distinguishing features of Caieiria?
Caieiria is distinguished by its tail vertebrae, which possess robust side processes that are vertically expanded. Additionally, the front tail vertebrae exhibit a deep excavation between specific anatomical laminae.
What is Caieiria's classification?
Caieiria is classified as a titanosaurian dinosaur. Phylogenetic analysis places it within the Aeolosaurini tribe, a group found within the larger Rinconsauria clade.
What other dinosaurs lived alongside Caieiria?
Caieiria shared its environment with other dinosaurs such as Baurutitan, and potentially other titanosaurs. The Serra da Galga Formation also yielded fossils of the unenlagiine dinosaur Ypupiara and several crocodylomorphs.
Related Dinosaur species
Baurutitan
Baurutitan was a genus of titanosaurian sauropod dinosaur that inhabited Brazil during the Late Cretaceous period. Distinguished by its unique caudal vertebrae, this South American dinosaur lived approximately 72 to 66 million years ago in what is now the Serra da Galga Formation. It is estimated to have been between 12 and 14 meters in length.
Abditosaurus
Abditosaurus is an extinct genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period in what is now Catalonia, Spain. It is known from the most complete titanosaur skeleton ever discovered in Europe, representing a large species that inhabited the Ibero-Armorican Island. Phylogenetic analyses suggest it was related to South American and African saltasaurines, distinguishing it from other European dwarf sauropods.
Acantholipan
Acantholipan is a genus of herbivorous nodosaurid dinosaur discovered in Mexico. It lived during the early Santonian age of the Late Cretaceous period and is known from fragmentary fossils, including a partial skeleton with osteoderms. Acantholipan gonzalezi is the type species, named in honor of paleontologist Arturo Homero González-González.