Tristychius: Difference between revisions
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|name = ''Tristychius'' |
|name = ''Tristychius'' |
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|fossil_range = {{Fossil range|Early Carboniferous}} |
|fossil_range = {{Fossil range|Early Carboniferous}} |
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| image = Tristychius.jpg |
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| image_width = 250px |
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| image_caption = Restoration |
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|regnum = [[Animal]]ia |
|regnum = [[Animal]]ia |
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|phylum = [[Chordata]] |
|phylum = [[Chordata]] |
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Revision as of 16:36, 26 February 2010
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| Genus: | Tristyichius
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Tristychius is an extinct genus of shark from the Carboniferous era. Fossils have been found in Scotland.
Tristychius was a small shark, about 60 centimetres (2 ft) long. It had a well-developed upturned caudal fin, similar to that of many modern sharks. Physically it may have resembled a modern dogfish. Tristychius also had spikes attached to the bases of its dorsal fins, probably for protection against predators.[1]
References
- ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 27. ISBN 1-84028-152-9.
 | This article about a prehistoric fish is a stub. You can help Wikipedia by expanding it. |
