Nullotitan (meaning "Nullo's giant", in honor of paleontologist Francisco Nullo) is an extinct genus of lithostrotian titanosaur dinosaurs from the Late Cretaceous Chorrillo Formation of Santa Cruz Province, Argentina. The genus contains a single species, Nullotitan glaciaris. It was a contemporary of the ornithopod Isasicursor, which was described in the same paper.
Nullotitan (meaning "Nullo's giant", in honor of paleontologist Francisco Nullo) is an extinct genus of lithostrotian titanosaur dinosaurs from the Late Cretaceous Chorrillo Formation of Santa Cruz Province, Argentina. The genus contains a single species, Nullotitan glaciaris. It was a contemporary of the ornithopod Isasicursor, which was described in the same paper.
== Discovery and naming == 200px|thumb|left|Satellite image of the Chorrillo Formation site (in the middle on the right), the geological unit from where Nullotitan remains have been discovered. In 1980, geologist Francisco E. Nullo noticed the presence of sauropod bones on a hillside of the Estancia Alta Vista, south of the Centinela River in the Santa Cruz province of Argentina. He reported these finds to paleontologist José Bonaparte, who excavated a large cervical vertebra the following year and reported it as cf. Antarctosaurus. The old site was relocated and new excavations were carried out between 13 and 17 January and 14 to 19 March 2019, and a new site was discovered on the Estancia La Anita. A new fauna came to light in an area of , including six concentrations of bones that could be assigned to the original find, which was now recognized as a new sauropod species.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).