Biology:Prymnetes
Prymnetes is an extinct genus of ray-finned fish that lived during the Late Cretaceous epoch.[1]
Discovery
The holotype specimen of Prymnetes was found by Dr. J. Berendt near Tuxtla Gutiérrez in Chiapas, Mexico, which he then sent to the Smithsonian Institution, where it was subsequently studied by the paleontologist Edward Drinker Cope. The holotype specimen was preserved on a block of lime slate, that preserved the body in lateral view and the head in ventral view. The holotype also preserves 25 longitudinal series of scales anterior to the ventral fins.[2]
Description
Prymnetes was 0.530 meters in length, its body was long and slender, its head was tall and deep, its mouth faced upwards, its orbits were big and the holotype also preserves three obtuse teeth on the anterior end of the premaxilla, the dentary was stout, its pectoral fins were moderate in length and the ventral fins were short and small, the anal fin was also short and small and the tail was bifurcated, its vertebrae were sulcated.[2]
Classification
Prymnetes was classified as an Ichthyodectiformes by Jesús Alvarado-Ortega in 2004 and as a Pachycormiformes by Sepkoski in 2002.[1][3]
References
- ↑ 1.0 1.1 Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology 364: 560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=611&rank=class. Retrieved 2009-02-27.
- ↑ 2.0 2.1 Cope, E. D. (1871). "On Two Extinct Forms of Physostomi of the Neotropical Region". Proceedings of the American Philosophical Society 12 (86): 52–55. ISSN 0003-049X. https://www.jstor.org/stable/981667.
- ↑ Alvarado-Ortega, Jesús (2004-12-10). [0802:DAROAN2.0.CO;2 "Description and relationships of a new ichthyodectiform fish from the Tlayúa Formation (Early Cretaceous: Albian), Puebla, Mexico"]. Journal of Vertebrate Paleontology 24 (4): 802–813. doi:10.1671/0272-4634(2004)024[0802:DAROAN2.0.CO;2]. ISSN 0272-4634. https://doi.org/10.1671/0272-4634(2004)024[0802:DAROAN]2.0.CO;2.
External links
- "Pachycormiformes". Paleobiology Database. https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=35232.
Template:Ichthyodectiformes Wikidata ☰ Q7253250 entry
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