Xenacanthus: Difference between revisions
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GrahamBould (talk | contribs) m Cats |
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|meaning = strange spike |
|meaning = strange spike |
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|length = 2 ft 6 in (75 cm) |
|length = 2 ft 6 in (75 cm) |
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|span = 410-202 million years ago |
|span = 410 - 202 million years ago |
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|diet = carnivore |
|diet = carnivore |
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|environment = ocean |
|environment = ocean |
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{{Sharksportal}} |
{{Sharksportal}} |
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'''Xenacanthidae''' is a family of prehistoric [[shark]]s, containing the single genus '''''Xenacanthus'''''. The first species of the genus lived in the later [[Devonian]], and they survived until the end of the [[Triassic]] |
'''Xenacanthidae''' is a family of prehistoric [[shark]]s, containing the single genus '''''Xenacanthus'''''. The first species of the genus lived in the later [[Devonian]] period, and they survived until the end of the [[Triassic]], 202 million years ago. These freshwater species had a long spine at the back of their head. As in all fossil sharks, ''Xenacanthus## is mainly known because of fossilised teeth and spines. |
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== Species == |
== Species == |
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[[Category:Sharks]] |
[[Category:Sharks]] |
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[[Category:Xenacanthidae]] |
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[[Category:Xenacanthida]] |
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[[Category:Prehistoric fish]] |
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[[pt:Xenacanthus]] |
[[pt:Xenacanthus]] |
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Revision as of 13:42, 25 September 2006
| Xenacanthus | |
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Fossil
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| Scientific classification | |
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| Family: | Xenacanthidae
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| Genus: | Xenacanthus
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| Species | |
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See text. | |
Template:Paleobox Template:Sharksportal
Xenacanthidae is a family of prehistoric sharks, containing the single genus Xenacanthus. The first species of the genus lived in the later Devonian period, and they survived until the end of the Triassic, 202 million years ago. These freshwater species had a long spine at the back of their head. As in all fossil sharks, Xenacanthus## is mainly known because of fossilised teeth and spines.
Species
- X. atriossis
- X. compressus
- X. decheni
- X. denticulatus
- X. erectus
- X. gibbosus
- X. gracilis
- X. howsei
- X. laevissimus
- X. latus
- X. luedernesis
- X. moorei
- X. ossiani
- X. ovalis
- X. parallelus
- X. parvidens
- X. robustus
- X. serratus
- X. slaughteri
- X. taylori
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