Euthynotus
| Euthynotus Temporal range:
| |
|---|---|
| E. incognitus specimen, State Museum of Natural History Stuttgart | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | †Pachycormiformes |
| Family: | †Protosphyraenidae |
| Genus: | †Euthynotus Agassiz, 1843 |
| Species: | †E. incognitus
|
| Binomial name | |
| †Euthynotus incognitus (de Blainville, 1818)
| |
| Synonyms[2] | |
| |
Euthynotus is an extinct genus of prehistoric marine ray-finned fish that lived in Europe during the Early Jurassic epoch.[1] It is generally considered the basalmost pachycormiform, although more recent studies instead place it as the most basal member of the predatory lineage within the pachycormiforms, the Protosphyraenidae.[3][4]
It contains only a single definitive species, E. incognitus (de Blainville, 1818) (=Esox incognitus de Blainville, 1818), known from well-preserved specimens from the Toarcian-aged Posidonia Shale of Germany.[5][6]
Three other species also placed in this genus by Woodward (1901), include E. intermedius Agassiz, 1844, E. speciosus Wagner, 1860 and E. milloti (Sauvage, 1891). However, Mainwaring (1978) found these species to all be fragmentary and most likely misattributed to this genus, with E. intermedius being lost and most likely a specimen of Pachycormus, E. milloti to be a member of Sauropsis, and E. speciosus to also be lost and also most likely a specimen of Sauropsis.[5][7][6] Another species placed here by Mainwaring (1978), E. retrodorsalis (itself formerly in Asthenocormus), is now placed in its own genus, Pseudoasthenocormus.[8]
See also
References
- ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on July 23, 2011. Retrieved 2009-02-27.
- ^ "†Euthynotus (ray-finned fish)". fossilworks. Retrieved 1 December 2022.
- ^ Wretman, Lovisa; Blom, Henning; Kear, Benjamin P. (2016-09-02). "Resolution of the Early Jurassic actinopterygian fish Pachycormus and a dispersal hypothesis for Pachycormiformes". Journal of Vertebrate Paleontology. 36 (5) e1206022. Bibcode:2016JVPal..36E6022W. doi:10.1080/02724634.2016.1206022. ISSN 0272-4634. S2CID 89338085.
- ^ Kanarkina, Alina; Zverkov, Nikolay G; Varenov, Dmitry V (2026-02-03). "A new species of the Late Jurassic pachycormiform fish Orthocormus and comments on the beta taxonomy and phylogenetic systematics of the Pachycormiformes". Zoological Journal of the Linnean Society. 206 (2). doi:10.1093/zoolinnean/zlag009. ISSN 0024-4082.
- ^ a b Jane, Mainwaring, Alison (1978). Anatomical and systematic review of the Pachycormidae, a family of mesozoic fossil fishes (Thesis). Westfield College. Archived from the original on 2024-09-17.
{{cite thesis}}: CS1 maint: multiple names: authors list (link) - ^ a b Woodward, Arthur Smith (1895). Catalogue of the Fossil Fishes in the British Museum (Natural History). British Museum.
- ^ "†Euthynotus (ray-finned fish)". Paleobiology Database. Retrieved 1 December 2022.
- ^ Cooper, Samuel L. A.; Maxwell, Erin E.; Martill, David M. (2024-09-01). "An unusually large 'suspension-feeding' fish from the Kimmeridge Clay Formation of Dorset: the first true record of Asthenocormus (Pachycormiformes: Asthenocorminae) in the UK". PalZ. 98 (3): 469–490. doi:10.1007/s12542-024-00700-1. ISSN 1867-6812.