Holonema

Holonema; Temporal range: Givetian to Frasnian,
	H. westolli
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Placodermi
Order:	†Arthrodira
Suborder:	†Brachythoraci
Family:	†Holonematidae
Genus:	†Holonema; Newberry, 1889
Type species
	Pterichthys rugosum; Claypole, 1883
Species
	H. rugosum (Claypole, 1883); H. arcticum Marik-Kurik, 1975; H. bruehni Markus, 1998; H. harmae Mark, 1953; H. farrowi Stevens, 1964; H. obrutshevi Mark, 1953; H. ornatum Traquair, 1903; H. haiti Denison, 1968; H. radiatum Obruchev, 1932; H. westolli Miles, 1971;
Synonyms
	Pterichthys rugosus Claypole, 1883; ?Glyptaspis eastmanni Swartz, 1913; Holonema horridum Cope, 1892; Holonema rohoni nomen nudum Obruchev 1931;

Holonema is an extinct genus of relatively large, barrel-shaped arthrodire placoderms that were found in oceans throughout the world from the Mid to Late Devonian, when the last species perished in the Frasnian-Fammian extinction event. Most species of the genus are known from fragments of their armor, but the Gogo Reef species, H. westolli, is known from whole, articulated specimens.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.