Biology:Pachyacanthus
| Pachyacanthus | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Artiodactyla |
| Infraorder: | Cetacea |
| Family: | Platanistidae |
| Genus: | †Pachyacanthus Brandt, 1871 |
| Species: | †P. suessi
|
| Binomial name | |
| †Pachyacanthus suessi Brandt, 1871
| |
Pachyacanthus is an extinct genus of toothed whale that lived about 15.97 to 2.589 million years ago (Miocene and Pliocene). It contains the single species Pachyacanthus suessi. The genus is known from European deposits in Hungary, Kazakhstan, Austria and Italy.[1][2] The type specimen consisted of a few fragments of a rostrum and two fragmentary tympanic bullae. Skeletons from the Sarmatian (Middle Miocene) of Austria did not include skulls.[3]
Morphology
The genus is related to modern South Asian river dolphin and is distinguished by pachyostosis in the spinous processes of the postcervical vertebrae.[4]
Paleoecology
The locations of discovery are thought to have corresponded to well-oxygenated, shallow water sustaining seagrasses similar to today's Mediterranean neptune grass.[5]
References
- ↑ "†Pachyacanthus suessii Brandt 1871 (toothed whale)". https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=64470.
- ↑ Domning, Daryl P. (10 Jan 2009). "The readaptation of Eocene sirenians to life in water". Historical Biology 14, 2000 (1–2): 115–119. doi:10.1080/10292380009380559.
- ↑ "Revision of the genus Pachyacanthus Brandt, 1871 (Mammalia: Cetacea: Odontoceti)". https://docplayer.net/49407312-Revision-of-the-genus-pachyacanthus-brandt-1871-mammalia-cetacea-odontoceti.html.
- ↑ Kazár, Emese (2010-07-12). "E. Kazár. 2010. Revision of the genus Pachyacanthus Brandt, 1871 (Mammalia: Cetacea: Odontoceti)". Annalen des Naturhistorischen Museums in Wien, Serie 112: 537–567.
- ↑ Garassino, A.; Pasini, G.; de Angeli, A.; Charbonnier, S.; Famiani, F.; Baldanza, A.; Bizzari, R. (2012). "The decapod community from the Early Pliocene (Zanclean) of "La Serra" quarry (San Miniato, Pisa, Toscana, central Italy): sedimentology, systematics, and palaeoenvironmental implications". Annales de Paléontologie 98 (1): 1–62. doi:10.1016/j.annpal.2012.02.001. ISSN 0753-3969. Bibcode: 2012AnPal..98....1G. https://decapoda.nhm.org/pdfs/38810/38810.pdf.
Wikidata ☰ Q65068936 entry
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