Two years ago, I took part in a small drawing flashmob about a predatory Middle Permian therapsid Dinosaurus murchisoni. The dinosaur was described from a skull fragment found in a copper mine in Bashkortostan in 1847. A larger skull from the same locality, missing the front part of the snout, was identified as a distinct genus, Phthinosuchus, by the renowned paleontologist I.A. Efremov. Years later, M.F. Ivakhnenko synonymized these genera. Dinosaurus's skull reached approximately 25 cm in length and was high and narrow. The jaws bore narrow incisors, canines with a cutting rear edge, and postcanine teeth with two cutting edges. This therapsid is usually considered a biarmosuchian, but Ivakhnenko classified it as a gorgonopsian. Dinosaurus may have lived at the same time as Estemmenosuchus and other animals of the so-called Ocher fauna.
Two years later, I didn't like some details of the original line art, so I decided to make some changes. Now this drawing looks a little better.
Adobe Photoshop, 2024-2026.