Ctenaspis
Encyclopedia
Ctenaspis is an extinct genus
of jawless fish from the early Devonian
of Europe
and North America
.
species
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of jawless fish from the early Devonian
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...
of Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
and North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
.
species
- Ctenaspis kiaeri (Zych, 1931)
Sources
- Vertebrate Fossils and the Evolution of Scientific Concepts by W. Sargeant
- BioLib.cz
External links
- Ctenaspis at Palaeos.com