Amyzon (fish)

Amyzon is an extinct genus belonging to the sucker family Catostomidae first described in 1872 by E. D. Cope.[1] There are six valid species in the genus. Amyzon are found in North American fossil sites dated from the Early Eocene in Montana and Washington USA, as well as the British Columbian sites at McAbee Fossil Beds, Driftwood Canyon, and the "Horsefly shale",[2] as well as Early Oligocene sites in Nevada USA.[1] One Middle Eocene species is known from the Xiawanpu Formation of China. The Ypresian species A. brevipinne of the Allenby Formation was redescribed in 2021 and moved to a separate monotypic genus Wilsonium.[3]

Amyzon
Temporal range:
10 cm (3.9 in) A. aggregatum fossil
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Catostomidae
Subfamily: Ictiobinae
Genus: †Amyzon
Cope, 1872
Type species
†Amyzon mentale
Cope, 1872
Species

See text

Species

There are six valid species included in Amyzon with up to nine species having been described.[4]

  • A. aggregatum Wilson, 1977 Early Eocene (Ypresian), Horsefly Beds, Horsefly, B.C.[2]: 32–40, 41 
  • A. commune (Cope, 1874) late Eocene Florissant Formation, Colorado (junior synonyms A. fusiforme Cope, 1875 & A. pandatum Cope, 1874 )
  • A. gosiutensis Grande, Eastman, & Cavender, 1982 Eocene Green River Formation[5]
  • A. hunanensis (Cheng, 1962) Middle Eocene, Xiawanpu Formation, China[6][7]
  • A. kishenehnicum Liu, Wilson, & Murray, 2016, Eocene, Kishenehn Formation, Montana[5]
  • A. mentale Cope, 1872 Oligocene, Osino Oil Shales, Nevada[1]
Moved from Amyzon

References
  1. Cope, ED (1872). "On the Tertiary coal and fossils of Osino, Nevada". Proceedings of the American Philosophical Society. 12: 478–481. Retrieved 4 November 2022.
  2. Wilson, MVH (1977). "Middle Eocene freshwater fishes from British Columbia". Life Sciences Contributions, Royal Ontario Museum. Royal Ontario Museum. 113: 1–66. Retrieved 4 November 2022.
  3. Liu, J. (2021). "Redescription of "Amyzon" brevipinne and remarks on North American Eocene catostomids (Cypriniformes: Catostomidae)". Journal of Systematic Palaeontology. 19 (9): 1–13. doi:10.1080/14772019.2021.1968966.
  4. Bruner, JC (1991). "Comments on the Genus Amyzon (Family Catostomidae)". Journal of Paleontology. 65 (4): 678–686. doi:10.1017/S0022336000030766.
  5. Liu, J.; Wilson, M. V.; Murray, A. M. (2016). "A new catostomid fish (Ostariophysi, Cypriniformes) from the Eocene Kishenehn Formation and remarks on the North American species of †Amyzon Cope, 1872". Journal of Paleontology. 90 (2): 288–304. doi:10.1017/jpa.2016.28.
  6. Liu, J.; Chang, M. M. (2009). "A new Eocene catostomid (Teleostei: Cypriniformes) from northeastern China and early divergence of Catostomidae". Science in China Series D: Earth Sciences. 52 (2): 189–202. doi:10.1007/s11430-009-0022-2.
  7. Zhang, J. Y.; Wilson, M. V. H. (2017). "First complete fossil Scleropages (Osteoglossomorpha)". Vertebrata PalAsiatica. 55 (1): 1–23. Retrieved 4 November 2022.
  8. Wilson, M. V. (1996). "Fishes from Eocene lakes of the interior". In R. Ludvigsen (ed.). Life in stone: a natural history of British Columbia’s fossils. Vancouver, BC: The University of British Columbia Press. pp. 212–224. ISBN 0774805781.
Wikimedia Commons has media related to Amyzon.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.