Enigmatic Proarticulata taxa

Cephalonega stepanovi is a fossil organism from Ediacaran deposits of the Arkhangelsk Region, Russia. It was described by Mikhail A. Fedonkin in 1976.

Lossinia is an extinct organism from the late Ediacaran of Russia. It is a unique proarticulate, and is also a monotypic genus, containing only Lossinia lissetskii.

extinct species of Cambrian organism