''Menaspis'' is an
extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...
genus of
holocephalian
cartilaginous fish
Chondrichthyes (; ) is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or ''bony fishes'', which have skeletons primarily composed of bone tissue ...
from the
Permian.
References
*''Aquagenesis: The Origin and Evolution of Life in the Sea'' by Richard Ellis
* ''Rocks and Fossils: A Visual Guide'' (Visual Guides) by Robert R. Coenraads
Holocephali
Prehistoric cartilaginous fish genera
Permian cartilaginous fish
Fossils of Germany
Kupferschiefer
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