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Colossosaur
Colossosauria is a clade of titanosaur sauropods from the latest Early Cretaceous through the Late Cretaceous of South America. The group was originally named by Bernardo González-Riga ''et al.'' in 2019 and defined as the "most inclusive clade containing '' Mendozasaurus neguyelap'' but not '' Saltasaurus loricatus'' or '' Epachthosaurus sciuttoi''". The clade contains different taxa depending on the phylogenetic analysis used, in the defining paper the only subgroups were Rinconsauria and Lognkosauria, but alternate phylogenies published previously had also included various similar titanosaurs such as ''Aeolosaurus'', ''Bonitasaura'', '' Drusilasaura'', '' Overosaurus'' and '' Quetecsaurus''. The phylogenetic analysis of González-Riga ''et al.'' (2019) placed Colossosauria as sister taxa to ''Epachthosaurus'', '' Pitekunsaurus'' and a larger clade including Saltasauridae. Due to the labile position of ''Epachthosaurus'' in titanosaur phylogeny, Carballido and colleagues propo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chucarosaurus
''Chucarosaurus'' (meaning "indomitable reptile") is an extinct genus of titanosaurian dinosaur from the Late Cretaceous (middle Cenomanian–lower Turonian) Huincul Formation of Argentina. The genus contains a Monotypic taxon, single species, ''C. diripienda'', known from various limb and pelvic bones. Discovery and naming The ''Chucarosaurus'' holotype specimen, MPCA PV 820, was discovered in sediments of the Huincul Formation, dated to the middle Cenomanian–lower Turonian ages of the late Cretaceous period, at Pueblo Blanco Natural Reserve in Río Negro Province, Argentina. The specimen consists of a complete left humerus, partial left Radius (bone), radius, complete left metacarpal II, left ischium, partial left femur and fibula, partial right tibia, and partial indeterminate metapodial, all of which belong to one individual. An additional specimen (MPCA PV 821), consisting of a left femur and tibia, was assigned as the paratype. In 2023, Agnolin et al. Species descripti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
