Gyrodus
| Gyrodus Temporal range:
| |
|---|---|
| Life restoration of Gyrodus hexagonus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Pycnodontiformes |
| Family: | †Pycnodontidae |
| Genus: | †Gyrodus Agassiz, 1843 |
| Species | |
| |
Gyrodus (from Greek: γύρος gyros, 'curved' and Greek: ὀδούς odoús 'tooth')[1] is an extinct genus of pycnodontiform ray-finned fish that lived from the Middle Jurassic (Bajocian) to the Early Cretaceous (Barremian).[2]
Palaeobiology
Dental microwear indicates that Gyrodus planidens closed its jaw in a propalinal motion with the prearticular shearing against the vomer during the powerstroke rather than through purely vertical jaw movement.[3]
References
- ^ Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 74. Retrieved 30 December 2021.
- ^ Kriwet, Jürgen; Schmitz, Lars (2005). "New insight into the distribution and palaeobiology of the pycnodont fish Gyrodus". Acta Palaeontologica Polonica. 50 (1): 49–56.
- ^ Baines, David Christian (31 October 2010). Tooth Microwear in Fishes (PhD thesis). University of Leicester. Retrieved 18 March 2026.
Further reading
- Fossils (Smithsonian Handbooks) by David Ward