Acanthodes
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| Acanthodes Temporal range: 409–284 Ma Early Carboniferous to Early Permian |
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| Acanthodes bronni from the Early Permian of Germany | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Acanthodii |
| Order: | Acanthodiformes |
| Genus: | Acanthodes |
Acanthodes (meaning spiny base or thorny base) is an extinct genus of spiny shark.[1] Fossils have been found in Europe, North America, and Australia.
Compared with other spiny sharks, Acanthodes was relatively large, at 30 centimetres (12 in) long. The genus had no teeth[2], instead gills. Because of this, it is presumed to have been a filter feeder, filtering plankton from the water.[3]
It also had fewer spines than many of its relatives. Each of the paired pectoral and pelvic fins had a spine, as did the single anal and dorsal fins, giving it a total of just six, less than half that of many other species.[3]
[edit] Notes
- ^ Edinburgh, Royal Physical Society of (1880). Proceedings of the Royal Physical Society of Edinburgh. V.. pp. p115. doi:10.1111/. http://books.google.com/?id=69kKAAAAIAAJ&pg=PA115&dq=Acanthodes+extinct.
- ^ Nicholson, Henry Alleyne; Richard Lydekker (1889). A Manual of Palaeontology. p. 966. http://books.google.com/?id=MoAXAAAAYAAJ&pg=PA966&dq=Acanthodes+pectoral+fins.
- ^ a b Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. pp. 30–31. ISBN 1-84028-152-9.
- Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 60
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