Английская Википедия:Camarillasaurus

Содержание

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Camarillasaurus (meaning "Camarillas lizard") is a genus of theropod dinosaur from the Early Cretaceous period (Barremian) of Camarillas, Teruel Province, in what is now northeastern Spain. Described in 2014, it was originally identified as a ceratosaurian theropod, but later studies suggested affinities to the Spinosauridae. If it does represent a spinosaur, Camarillasaurus would be one of 4 spinosaurid taxa known from the Iberian peninsula, the others being Vallibonavenatrix, Protathlitis and Iberospinus.

Discovery and naming

Файл:Camarillasaurus cirugedae.jpg

Holotype sacrum and centrum

Fossils of Camarillasaurus were discovered in the Camarillas Formation. The type species, Camarillasaurus cirugedae, was described by palaeontologists Bárbara Sánchez-Hernández and Michael J. Benton. The generic name, "'Camarillasaurus", combines a reference to the geologic formation in which the holotype was found with the Greek "sauros", meaning "lizard". The specific name, "cirugedae", honors Pedro Cirugeda Buj, the discoverer of the holotype specimen.

Classification

Файл:Camarillasaurus restoration.jpg

Life restoration as a spinosaur

In their 2014 description of Camarillasaurus, Sánchez-Hernández & Benton considered it to be a basal ceratosaur, filling in a "gap" in the known diversity of the clade between the Late Jurassic Limusaurus and later "mid"-Cretaceous taxa. They tested its phylogenetic position using a ceratosaurian dataset, and recovered the following results:

However, in an abstract presented at the 2019 conference of the European Association of Vertebrate Palaeontologists, Oliver Rauhut and colleagues suggested it was more likely to be a member of the Megalosauroidea—likely the Spinosauridae—rather than a ceratosaur, based on characters of the posterior caudal vertebrae and newly excavated material at the type locality. A 2021 paper by Samathi, Sander & Chanthasit was published with a similar conclusion, noting similarities with spinosaur material from Thailand and other taxa within the family.

In the 2023 description of Protathlitis, Santos-Cubedo et al. performed a phylogenetic analysis, recovering Camarillasaurus as the basalmost member of the Spinosauridae, outside of the Baryonychinae/Spinosaurinae split. They further suggested that, due to similarities in anatomy, phylogenetic position, and age, Iberospinus may be the sister taxon to Camarillasaurus, or synonymous with it. Their results are shown in the cladogram below:

In a 2024 review of theropod fossils from India, focusing on potential noasaurid bones, Mohabey et al. included Camarillasaurus in a phylogenetic analysis, recovering it within the ceratosaurian clade Noasauridae. Their results are shown in the cladogram below:

References

Шаблон:Theropod-stub