''Cardipeltis'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of heterostracan

agnatha Agnatha (, Ancient Greek 'without jaws') is an infraphylum of jawless fish in the phylum Chordata, subphylum Vertebrata, consisting of both present ( cyclostomes) and extinct (conodonts and ostracoderms) species. Among recent animals, cyclos ...

n from marine strata of early

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, w ...

Utah Utah ( , ) is a state in the Mountain West subregion of the Western United States. Utah is a landlocked U.S. state bordered to its east by Colorado, to its northeast by Wyoming, to its north by Idaho, to its south by Arizona, and to its ...

, and

Wyoming Wyoming () is a state in the Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the southwest, and Colorado to the sou ...

.Bryant, William L., and Rudolph Ruedemann. "The fish fauna of Beartooth Butte, Wyoming. Parts II and III." Proceedings of the American Philosophical Society (1934): 127-167.Denison, Robert Howland. Cardipeltis: an early Devonian agnathan of the Order Heterostraci. Field Museum of Natural History, 1966. Species of ''Cardipeltis'' superficially resemble those of cyathaspids in having a flattened body and indistinct head covered by a large, broad, guitar pick or heart-shaped dorsal shield, and a long, scaly tail. Unlike cyathaspids, which all have a single ventral plate, however, the ventral shield of ''Cardipeltis'' is a mosaic composed of large scales.

References

Heterostraci genera Devonian jawless fish Devonian fish of North America Taxa named by Maurice Mehl {{Pteraspidomorphi-stub