Tastavinsaurus

Tastavinsaurus is a genus of sauropod dinosaur belonging to the Titanosauriformes. It is based on a partial skeleton from the Early Cretaceous Xert Formation of Spain. The type species is Tastavinsaurus sanzi, named in honor of the Rio Tastavins in Spain and Spanish paleontologist José Luis Sanz.^[1] Tastavinsaurus sanzi is known from two specimens, one from the Xert Formation and one from the Forcall Formation.^[2] Tastavinsaurus was originally described as a somphospondylan,^[1] but it may be a brachiosaurid.^[3] The clade Laurasiformes was coined for Tastavinsaurus and its close relatives, which may include Cedarosaurus, Soriatitan, and Venenosaurus.^[2][3]

Tastavinsaurus Temporal range: Early Barremian ~125 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Left hindlimb of the referred specimen CT-19
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	†Sauropodomorpha
Clade:	†Sauropoda
Clade:	†Macronaria
Clade:	†Camarasauromorpha
Branch:	†Laurasiformes
Genus:	†Tastavinsaurus Canudo et al., 2008
Species:	†T. sanzi
Binomial name
†Tastavinsaurus sanzi Canudo et al., 2008

Description

Restoration

The length of Tastavinsaurus sanzi has been estimated to be 16 metres (50 feet), and its weight has been estimated to be 8 tonnes.^[4] The caudal vertebrae are similar to those of other basal titanosauriforms, such as Cedarosaurus.^[1] The shin was proportionally shorter than in other sauropods, with the length of the tibia being only 55% of the length of the femur.^[2]