Asylosaurus

Asylosaurus is a genus of basal sauropodomorph dinosaur that roamed the Earth during the Late Triassic period. Its fossils were discovered in the Avon Fissure Fill of England, specifically within a Rhaetian-age cave fill at Durdham Down, Clifton, Bristol.

Naming and Discovery

The genus was formally described by Peter Galton in 2007. The type species, A. yalensis, was named in honor of Yale University, where some of the fossil material was brought by Othniel Charles Marsh between 1888 and 1890. These particular remains fortunately survived a World War II bombardment that destroyed the original holotype of the related dinosaur Thecodontosaurus.

Physical Characteristics and Diet

Asylosaurus is known from partial skeletal remains, including vertebrae, ribs, gastralia, elements of the shoulder girdle, humeri (upper arm bones), and parts of the forearm and hand. Additional bones from the neck, tail, pelvis, arms, and legs may belong to the same individual. Estimates suggest Asylosaurus was approximately 2 meters (6 ft 7 in) in length and weighed around 250 kilograms (550 lb). Its diet is thought to have been omnivorous or herbivorous, potentially occupying a distinct ecological niche from its contemporaries.

Distinguishing Features

Asylosaurus is differentiated from other contemporaneous basal sauropodomorphs like Thecodontosaurus and Pantydraco primarily by the specific structure of its humerus. This anatomical difference may have played a role in its specialized lifestyle or feeding habits.