''Arpagodus'' is an extinct
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
eugeneodont fish from the
Carboniferous period
The Carboniferous ( ) is a geologic period and system of the Paleozoic era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the Permian Period, Ma. It is the fifth and penultimate perio ...
. It currently contains only the species ''A. rectangulus.'' It is known mainly from the
Pennsylvanian subperiod, such as the early Pennsylvanian of
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
and the late Pennsylvanian of
Raytown Limestone Formation of
Kansas, USA.
References
Eugeneodontida
{{paleo-holocephalan-stub