Genus of titanosaurian sauropod from the Late Cretaceous period
Rocasaurus
Temporal range: Campanian-Maastrichtian, 75–70 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
↓
Femur and pelvis
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Dinosauria
Clade:
Saurischia
Clade:
†Sauropodomorpha
Clade:
†Sauropoda
Clade:
†Macronaria
Clade:
†Titanosauria
Family:
†Saltasauridae
Tribe:
†Saltasaurini
Genus:
†Rocasaurus
Species:
†R. muniozi
Binomial name
†Rocasaurus muniozi
Salgado & Azpilicueta, 2000
Rocasaurus (meaning "General Roca lizard") is a genus of titanosaurian sauropod that lived in South America. Rocasaurus was discovered in Argentina in 2000, within the Allen Formation which is dated to be middle Campanian to early Maastrichtian in age (75 to 70 million years ago in the Late Cretaceous). This genus grew up to 8 metres (26 ft) long, making it one of the smaller sauropods. It seems to be closely related to saltasaurid dinosaurs, like Saltasaurus and Neuquensaurus.
The type species, Rocasaurus muniozi, was formally described by Leonardo Salgado and Azpilicueta in 2000.[1] New specimens were described in 2021.[2]
^Salgado, L. and C. Azpilicueta. (2000). Un nuevo saltasaurino (Sauropoda, Titanosauridae) de la provincia de Río Negro (Formacíon Allen, Cretácico Superior), Patagonia, Argentina. Ameghiniana 37 (3):259-264.
^Rolando MA, Garcia Marsà JA, Agnolín FL, Motta MJ, Rodazilla S, Novas FE (2021-09-20). "The sauropod record of salitral ojo del agua: An upper cretaceous (Allen formation) fossiliferous locality from northern patagonia, Argentina". Cretaceous Research. 129: 105029. doi:10.1016/j.cretres.2021.105029. ISSN 0195-6671. S2CID 240577726.
Rocasaurus (meaning "General Roca lizard") is a genus of titanosaurian sauropod that lived in South America. Rocasaurus was discovered in Argentina in...
Neuquensaurus that are absent even in the close relatives Saltasaurus and Rocasaurus. Unique among all sauropods, the sacrum of Neuquensaurus is composed of...
Other contemporaneous paleofauna includes the titanosaurs Laplatasaurus, Rocasaurus and Saltasaurus, the bird Limenavis, and the hadrosaurids Bonapartesaurus...
saltasaurids were smaller, around fifteen metres (49 feet) in length, and one, Rocasaurus, was only eight metres (26 feet) long. Like all sauropods, the saltasaurids...
was robust, being on average 23% as broad as it was long, similar to Rocasaurus but somewhat less than Diamantinasaurus, Opisthocoelicaudia, and Saltasaurus...
from the formation) "Dorsal and caudal vertebrae, partial femur" A titanosaur. Rocasaurus R. muniozi Lower "Partial postcranial skeleton" A titanosaur....
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