Английская Википедия:Hemicyclaspis
Шаблон:Short description Шаблон:Automatic taxobox
Hemicyclaspis (Шаблон:Lit or 'semicircle plate') is an extinct genus of primitive jawless fish, closely related to Cephalaspis, that lived in the Late Silurian (Pridoli)[1] to Devonian period in what is now Europe and North America. A typical cephalaspid, Hemicyclaspis had a heavily armored, shovel-shaped headshield. It is thought to have been a better swimmer than most of its relatives because of its powerful tail, stabilizing dorsal fin and the keel-shaped hydrodynamic edges of its head shield. Hemicyclaspis probably foraged the ocean floor for food.[2]
Hemicyclaspis grew to a length of 5 inches (13 centimeters) and would most likely have fed on particles from the muddy sea bed.
References
- Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 58
Шаблон:Osteostraci Шаблон:Taxonbar
Шаблон:Devonian-jawless-fish-stub
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- Osteostraci genera
- Early Devonian fish of Europe
- Devonian fish of North America
- Paleozoic life of Nunavut
- Fossil taxa described in 1869
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