Named By: Ahlberg.
Classification: Chordata, Tetrapoda, Amphibia, Ichthyostegalia, Elginerpetontidae.
Species: O. gracilis.
Size: Exact length unknown.
Known locations: Latvia.
Time period: Frasnian of the Devonian.
Fossil representation: Partial jaw fragment.
Analysis of Obruchevichthys remains has struck up similarities with a tetrapod named Elginerpeton. This has revealed that Obruchevichthys was also a member of the early tetrapods, not a lobe finned fish as first thought. Along with Elginerpeton, Obruchevichthys predated the other tetrapods by an estimated 5-8 million years.
- Morphology and nature of evolution of crossopterygian fishes. - Trudy Paleontological Institute Akademie Nauk SSSR 163: 1-239. - E. I. Vorobyeva - 1977.
- Revision of the early tetrapod Obruchevichthys Vorobyeva, 1977 from the Frasnian (Upper Devonian) of the North-western East European Platform. - Paleontological Journal 48(10):1082-1091. - Gaël Clément & Oleg Anatolyevich Lebedev - 2014.