Tangvayosaurus

Tangvayosaurus Temporal range: Ma PreꞒ Ꞓ O S D C P T J K Pg N [1]
Holotype of Tangvayosaurus, Dinosaur Museum, Savannakhet, Laos
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Sauropoda
Clade:	†Macronaria
Family:	†Euhelopodidae
Genus:	†Tangvayosaurus Allain et al., 1999
Species:	†T. hoffeti
Binomial name
†Tangvayosaurus hoffeti Allain et al., 1999
Synonyms
Titanosaurus falloti (?) Hoffet, 1942

Tangvayosaurus (meaning "Tang Vay lizard") is a

It is based on TV4-1 to TV4-36, consisting of a partial pelvis, several back vertebrae and a tail vertebra, ribs, and an upper arm bone (humerus). Another skeleton includes 38 tail vertebrae, a neck vertebra, and most of a hind limb. The type species, Tangvayosaurus hoffeti, was described by a group of a dozen scientists led by Ronan Allain in 1999 and the species name honours French palaeontologist Joshua Hoffet (1901-disappeared 1945). Allain et al. also referred the old species "Titanosaurus" falloti (Hoffet, 1942),^[2] from the same formation and based on partial thigh bones and tail vertebrae, to their genus as T. sp.^[3] The most recent review tentatively retains the genus because it is different from the only other established sauropod from the same approximate time but found next door in Thailand (Phuwiangosaurus), but disagrees with adding T. falloti to it.^[4]

Classification

Although consistently recovered within the Somphospondyli, the exact placement of Tangvayosaurus is debated. It was initially assigned by Allain et al. (1999) to the

D'Emic (2012) found that Tangvayosaurus was the sister taxon of Phuwiangosaurus within the Euhelopodidae.^[6]

References