Zenaspis
Encyclopedia
Zenaspis is an extinct genus of jawless fish which existed during the early Devonian
period. It contains the species Z. powriei, and a species from Ukraine
, Z. kasymyri, described by Victor Voichyshyn in 2011.
Devonian
The Devonian is a geologic period and system of the Paleozoic Era spanning from the end of the Silurian Period, about 416.0 ± 2.8 Mya , to the beginning of the Carboniferous Period, about 359.2 ± 2.5 Mya...
period. It contains the species Z. powriei, and a species from Ukraine
Ukraine
Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...
, Z. kasymyri, described by Victor Voichyshyn in 2011.