Vjushkovisaurus

Vjushkovisaurus is an extinct genus of Middle Triassic archosauriform. It is known from the Anisian-aged Donguz Gorizont in Sol-Iletsk, Orenburg Oblast, Russia. The genus was named in 1982, with the type species being V. berdjanensis. Material has been collected in the Berdyanka II locality from a fossil assemblage called the Eryosuchus Fauna along the Berdyanka River, specifically in a sand-carbonate concretion in the upper part of the main river channel.Vjushkovisaurus is known only from the holotype PIN 2865/62 (formerly SGU 104/3871), a partial postcranial skeleton which consists of 12 presacral vertebrae, left humerus, ribs, a fragment of the coracoid and a fragment of the fibula.

Most rauisuchids have a crest on the illium called the supra-acetabular process that overlies the head of the femur, allowing them to have a "pillar-erect" stance. As an early rauisuchid Vjushkovisaurus lacks this crest, but it does have a small thickening on the surface of the illium. The humerus differs from other better known rauisuchids in that it is shorter and broader. However, it has been suggested that the only known humerus of Vjushkovisaurus may actually belong to an aetosaur.