Cephalaspidida is an
extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...
order of jawless fish in the subclass
Cornuata.
See also
* ''
Undichna
''Undichna'' is a fish-fin, or fish-swimming fossil trail left as a fossil impression on a substrate, or the opposite impression on an overlying substrate; this type of fossil is an ichnofossil, in this case a specific ichnogenus, ''Undichna''; ...
'', a fish-fin, or fish-swimming fossil trail left as a fossil impression on a substrate, or the opposite impression on an overlying substrate
*
Anatol Heintz (1898–1975), a Norwegian palaeontologist who published in 1939 ''Cephalaspida from Downtonian of Norway'', about cephalaspida excavated at Ringerike.
References
*
J. A. Moy-Thomas and R. S. Mile. 1971. ''Palaeozoic Fishes''
External links
*
Cephalaspidida at fossilworks.org(retrieved 16 April 2016)
Osteostraci
Prehistoric jawless fish orders
{{Paleo-jawless-fish-stub