Biology:Pharyngolepis
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Short description: Extinct genus of jawless fishes
Pharyngolepis | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | †Anaspida |
Order: | †Birkeniiformes |
Family: | †Pharyngolepididae Kiær 1924 corrig. |
Genus: | †Pharyngolepis Kiaer 1911 |
Type species | |
Pharyngolepis oblonga Kiær 1911
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Species | |
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Pharyngolepis is an extinct genus of primitive jawless fish that lived in the Silurian period of what is now Norway .
Pharyngolepis had well-developed anal and caudal fins, but no paired or dorsal fins that would have helped stabilise it in the water, and so was probably a poor swimmer, remaining close to the sea bottom. The pectoral fins were instead replaced by bony spines, possibly for protection against predators, and there was a row of spines along the back. It probably scooped up food from the ocean floor.[1]
References
- ↑ Palmer, D., ed (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 25. ISBN 1-84028-152-9.
Wikidata ☰ Q7180897 entry
Original source: https://en.wikipedia.org/wiki/Pharyngolepis.
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