Doliosauriscus

Live reconstruction of Doliosauriscus

• Russia ( Ischejewo, Tatarstan, Perm region )

• Doliosauriscus yanshinovi ( Orlov, 1958)

Doliosauriscus is an extinct genus of carnivorous synapsids ( " mammal-like reptiles " ) from the late Mittelperm ( Capitanium ) of Russia. The genus was first described in 1958 by the Russian paleontologist Yuri Alexandrovich Orlov as Doliosaurus, the generic name was changed from Kuhn due to homonymy in the still valid today. The type species is D. yanshinovi.

Fossils of the type species D. yanshinovi come from the Russian region of Perm, remains of a second formerly provided to Doliosauriscus species D. adamanteus from the Orenburg Oblast ( Small uranium), which was during the Permian to the equator. Doliosauriscus very similar to the South African genus Anteosaurus and the Titanophoneus also found in Russia.

Physique

Doliosauriscus yanshinovi

With a length of 3-4 meters Doliosauriscus was with Titanophoneus the Spitzenprädator in its ecosystem. D. yanshinovi is delivered with a skull and skeleton very well preserved. The 53 -centimeter-long skull was tall and straight, the eye sockets and the opening for the parietal eye were not very big. The dorsal skull bones were thickened by rough excrescences, especially the apex region.

The basic structure of the skull was very much like that of Titanophoneus and Syodon, the skull, however, was probably a bit lower and wider than that of Titanophoneus. The postorbital was very large and formed a robust rail between orbits and cranial windows for the attachment of the jaw muscles. The relatively large muzzle housed a bite, the already slightly reminiscent of that of mammals, but still had many reptilian characteristics. So Doliosauriscus already had three kinds of teeth, particularly stood out the saber- tooth-like fangs. The sharp front teeth and the rear also pointed tooth rows Although different in length from each other, but are not yet specialized.

Doliosauriscus adamanteus

This type is obtained with a skull and lower jaw. However, there is no certainty that the two parts belong together. Both parts come from the area of the small uranium. The skull reached a length of 55 centimeters. Olson hit 1962, that the type specimen of D. adamanteus sufficiently by D. yanshinovi different, to put it in its own genus, which in turn is closer to Titanophoneus. Accordingly, this kind of genre Titanophoneus is attributed since 1997.