Biology:Acondylacanthus
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Short description: Extinct genus of Euselachian shark
| Acondylacanthus | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Order: | †Ctenacanthiformes |
| Family: | †Ctenacanthidae |
| Genus: | †Acondylacanthus St. John & Worthen, 1875 |
| Species | |
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Acondylacanthus is an extinct genus of ctenacanthiform from the Paleozoic era. The type species is A. gracilis.[1] Most species are known from the Carboniferous of United States and the British isles. A. jaekeli is known from the upper Frasnian of Germany and the Upper Famennian of Russia. This genus is based entirely upon isolated dorsal fin spines, and thus may later be found synonymous with tooth-based genera.[2] Many species have been ascribed to this genus, though there has been some confusion with Ctenachanthus. This genus is in need of review and research.[3]
References
- ↑ Itano, Wayne M.; Houck, Karen J.; Lockley, Martin G. (May 2003). "Ctenacanthus and other chondrichthyan spines and denticles from the Minturn Formation (Pennsylvanian) of Colorado". Journal of Paleontology 77 (3): 524–535. doi:10.1017/s002233600004422x. ISSN 0022-3360. http://dx.doi.org/10.1017/s002233600004422x.
- ↑ Lebedev, Oleg (Jan 1995). "Middle Famennian (Upper Devonian)Chondrichthyans and Sarcopterygians from Oryol region; Central Russia". Geobios 28: 361–368. doi:10.1016/s0016-6995(95)80139-1. ISSN 0016-6995. http://dx.doi.org/10.1016/s0016-6995(95)80139-1.
- ↑ "Fossilworks: Acondylacanthus". http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=206298.
Wikidata ☰ {{{from}}} entry
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