{{Short description|Extinct order of jawless fishes}} {{about|the prehistoric fish taxon|the taxon about gastropods known as bubble snails|Cephalaspidea}} {{Taxobox | fossil_range = | image = Cephalaspis tenuicornis.jpg | image_caption = ''Cephalaspis tenuicornis'' | regnum = Animalia | phylum = Chordata | classis = †Osteostraci | subclassis = †Cornuata | ordo = †'''Cephalaspidida''' | ordo_authority = Moy-Thomas and Mile 1971 | subdivision_ranks = Families | subdivision = * †Cephalaspidae * Genus incertae sedis †''Superciliaspis'' | synonyms = *Cephalaspida *Cephalaspidiformes }}
'''Cephalaspidida''' is an extinct order of jawless fish in the subclass Cornuata.
== See also == * ''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 == {{Reflist}} * J. A. Moy-Thomas and R. S. Mile. 1971. ''Palaeozoic Fishes''
== External links == <!-- * {{wikispecies-inline}} * {{commons-inline}} --> * {{eol|4937553}} * [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=251938 Cephalaspidida at fossilworks.org] (retrieved 16 April 2016)
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Category:Osteostraci Category:Prehistoric jawless fish orders
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