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Clasmodosaurus spatula Ameghino 1898 (sauropod)

Reptilia - Dinosauria

Belongs to Sauropoda according to P. Upchurch et al. 2004

Sister taxa: Agustiniidae, Amygdalodon, Antetonitrus, Archaeodontosaurus, Asiatosaurus, Astrodon johnstoni, Atlantosaurus, Blikanasaurus, Bothriospondylidae, Bothrosauropodidae, Bothrosauropodoidea, Brachiosaurus nougaredi, Brontopodidae, Brontopodus, Brontosauridae, Bruhathkayosaurus, Camarasauroidea, Cardiodontidae, Cetiosaurus epioolithicus, Cetiosaurus longus, Chiayusaurus, Chinshakiangosaurus, Chondrosteosaurus, Chubutisauridae, Chuxiongosaurus, Dystrophaeus, Eusauropoda, Faveoloolithidae, Gongxianosaurus, Gravisauria, Haplocanthosauridae, Herrerasauridae, Homalosauropodidae, Homalosauropodoidea, Iguanodon praecursor, Isanosaurus, Koreanosauripus, Kotasaurus, Lamplughsaura, Lancanjiangosaurus, Lessemsaurus, Mamenchisauroidea, Microsaurops, Ohmdenosaurus, Oplosaurus, Ornithopsidae, Parabrontopodidae, Parabrontopodus, Parrosaurus, Pleurocoelidae, Pleurocoelus nanus, Polyonyx, Protognathosaurus, Qinlingosaurus, Ravatichnus, Rotundichnus, Spinophorosaurus, Tapinosaurus, Tazoudasaurus, Tendaguriidae, Titanosaurus lydekkeri, Titanosaurus montanus, Vulcanodon, Zizhongosaurus, Aepisaurus elephantinus, Kunmingosaurus wudingensis, Morinosaurus typus, Morinosaurus priscus, Ultrasaurus tabriensis, Hamanosauripus ungulatus, Algoasaurus bauri, Gigantosaurus megalonyx, Campylodon ameghinoi

Type specimen: Ameghino pers. coll., a tooth. Its type locality is Par-Aik, Río Sehuen, which is in a Santonian/Campanian terrestrial sandstone in the Mata Amarilla Formation of Argentina.

Ecology: ground dwelling herbivore