| Edestidae Temporal range: Early Carboniferous to Early Triassic
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| Artist's reconstruction of Edestus heinrichi | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Holocephali |
| Order: | †Eugeneodontiformes |
| 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 subclass Holocephali.1 The family disappeared in the Early Triassic.2
References
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. 9 (2). doi:10.1098/rsbl.2013.0057. PMC 3639784. PMID 23445952. S2CID 6131252.
- Scheyer, Torsten M.; Romano, Carlo; Jenks, Jim; Bucher, Hugo (19 March 2014). "Early Triassic Marine Biotic Recovery: The Predators' Perspective". PLOS ONE. 9 (3) e88987. Bibcode:2014PLoSO...988987S. doi:10.1371/journal.pone.0088987. PMC 3960099. PMID 24647136.
External links
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