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]
Referencesedit
^Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 25. ISBN1-84028-152-9.
pharyngolepis, extinct, genus, primitive, jawless, fish, that, lived, silurian, period, what, norway, temporal, range, late, silurian, preꞒ, scientific, classification, domain, eukaryota, kingdom, animalia, phylum, chordata, class, anaspida, order, birkeniifor. Pharyngolepis is an extinct genus of primitive jawless fish that lived in the Silurian period of what is now Norway PharyngolepisTemporal range Late Silurian PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Anaspida Order Birkeniiformes Family PharyngolepididaeKiaer 1924 corrig Genus PharyngolepisKiaer 1911 Type species Pharyngolepis oblongaKiaer 1911 Species P heintzi Ritchie 1964 P kiaeri Smith 1957 P oblonga Kiar 1911 reconstruction 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 edit Palmer D ed 1999 The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals London Marshall Editions p 25 ISBN 1 84028 152 9 nbsp Paleontology portal nbsp This article about a prehistoric jawless fish is a stub You can help Wikipedia by expanding it vte nbsp This article related to a Silurian animal is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Pharyngolepis amp oldid 1018026625, wikipedia, wiki, book, books, library,
