Youngosuchus sinensis (=Vjushkovia triplicostata von Huene 1960; Early Triassic ~240 mya; the lectotype (a skull roof, PIN 951/59) and isolated skull and postcranial bones (PIN 951/1–40, 46, 54–64, 69, 70, 78–105; IVPP V3239) was derived from a sister to Euparkeria nesting at the base of the Rauisuchidae. Youngosuchus also nested at the base of the stem archosaurs, including Decuriasuchus.

Compared to Euparkeria, the skull of Vjushkovia the naris was elongated and dorsal in position. The antorbital fenestra was triangular with the apex posterior. The orbit was smaller. The postorbital was more gracile but the squamosal was deeper and more robust. The retroarticular process was less distinct.

The cervicals are more robust and taller. There is an S-curve produced in the series. The dorsal neural spines are taller. No osteoderms are present along the spine.

Asperoris mnyama (Nesbitt et al., 2013, NHMUK PV R36615) is a sister to Vjushkovia. Nesbitt et al's 2013 phylogenetic analysis resulted in a strict consensus tree with Asperoris in a polytomy or unresolved phylogenetic relationship with Erythrosuchus, Vancleavea, the proterosuchid clade, and the clade including Euparkeria, phytosaurs, and Archosauria. Vjushkovia was not included and Vancleavea is a thalattosaur.

Huene F von 1960. Ein grosser Pseudosuchier aus der Orenurger Trias. Palaeontographica Abteilung A 114:105-111.

Nesbitt SJ, Butler RJ and Gower DJ 2013. A New Archosauriform (Reptilia: Diapsida) from the Manda Beds (Middle Triassic) of Southwestern Tanzania. PLoS ONE 8(9): e72753. http://www.plosone.org/

wiki/Vjushkovia

wiki/Asperoris