Edestidae
Appearance
Edestidae Temporal range: Early Carboniferous to Early Jurassic
| |
---|---|
![]() | |
Edestus protopirata | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Subclass: | Holocephali |
Order: | †Eugeneodontida |
Clade: | †Edestoidea |
Family: | †Edestidae Jaekel, 1899 |
Genera | |
The Edestidae are a poorly known, extinct family of shark-like eugeneodontid holocephalid cartilaginous fish. Similar to the related family Helicoprionidae, members of this family possessed a unique "tooth-whorl" on the symphysis of the lower jaw and pectoral fins supported by long radials. In addition to having a tooth-whorl on the lower jaw, at least one species of the genus Edestus had a second tooth-whorl in the upper jaw. The palatoquadrate was either fused to the skull or reduced. Edestids, along with the rest of the Eugeneodontida, are placed within the Holocephali.[1]
References
- ^ Tapanila, L., Pruitt, J., Pradel, A., Wilga, C., Ramsay, J., Schlader, R., Didier, D. 2013. Jaws for a spiral-tooth whorl: CT images reveal novel adaptation and phylogeny in fossil Helicoprion. Biology Letters. 10.1098/rsbl.2013.0057
External links
- Palaeos Vertebrates 70.100 Chondrichthyes: Eugnathostomata Paleos.com at paleos.com
- JSTOR: Journal of PaleontologyVol. 70, No. 1 (Jan., 1996), pp. 162-165
- Mikkk's phylogeny Archive