Tengrisaurus (meaning "Tengri lizard") is an extinct genus of titanosaurian sauropod dinosaur known from the Early Cretaceous (Valanginian) Murtoi Formation of Russia. The genus was described in 2017 by Averianov & Skutschas, containing a single species, Tengrisaurus starkovi, known from several isolated vertebrae. Despite being among the oldest named definitive titanosaurs, it is an anatomically derived member of the clade Colossosauria.
Tengrisaurus (meaning "Tengri lizard") is an extinct genus of titanosaurian sauropod dinosaur known from the Early Cretaceous (Valanginian) Murtoi Formation of Russia. The genus was described in 2017 by Averianov & Skutschas, containing a single species, Tengrisaurus starkovi, known from several isolated vertebrae. Despite being among the oldest named definitive titanosaurs, it is an anatomically derived member of the clade Colossosauria.
== History and description == In 2017, Averianov & Skutschas described Tengrisaurus starkovi as a new genus and species of lithostrotian titanosaur based on three caudal vertebrae: the holotype, ZIN PH 7/13, an anterior vertebra, ZIN PH 14/13, another anterior vertebra, and ZIN PH 8/13, a middle vertebra. In 2021, Averianov, Sizov & Skutschas published a reassessment of the genus, referring BM 38/7120, an additional anterior caudal vertebra, to the species.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).