Misplaced Pages

Ampheristus

Article snapshot taken from[REDACTED] with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Extinct genus of fishes

Ampheristus
Temporal range: Maastrichtian–Early Oligocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Ophidiiformes
Family: Ophidiidae
Genus: †Ampheristus
König, 1825
Type species
†Ampheristus toliapicus
König, 1825
Species

See text

Ampheristus is an extinct genus of prehistoric marine ray-finned fish. It was a basal or stem member of the family Ophidiidae, which contains modern cusk-eels. Fossils are known from worldwide (the United States, Europe, India, and New Zealand) from the Late Cretaceous to the late Paleogene (Maastrichtian to Oligocene), making it a rather successful survivor of the Cretaceous-Paleogene extinction event.

It is one of the oldest known members of the order Ophidiiformes alongside Pastorius from the Maastrichtian of Italy. Only the type species, A. toliapicus from the London Clay, is known from body fossils; the rest are known only by the genus's distinctive otoliths.

Species

The following species are known:

  • A. americanus Schwarzhans & Stringer, 2020 (Maastrichtian of Texas and Maryland, Danian of Arkansas)
  • A. bavaricus (Koken, 1891) (Maastrichtian of Germany)
  • A. bhavnagarensis Singh, Patel & Rana, 2017 (Eocene of India)
  • A. brevicauda Schwarzhans, 2010 (Maastrichtian of Germany)
  • A. brevicaudatus Lin, Steurbaut & Nolf, 2024 (Eocene of Alabama, Virginia and Maryland)
  • A. neobavaricus Schwarzhans, 2012 (Paleocene of Germany)
  • A. pentlandensis Schwarzhans, 2019 (Eocene of New Zealand)
  • A. sinuocaudatus Schwarzhans, 1980 (Eocene of New Zealand)
  • A. sztrakosi Nolf & Steurbaut, 2004 (Oligocene of Italy)
  • A. toliapicus König, 1825 (Eocene of the United Kingdom) (type species)
  • A. traunensis Schwarzhans, 2010 (Maastrichtian of Germany)

The species A. lerichei, known by a body fossil from the Eocene of Belgium and otoliths from the same region, is alternately placed in Ampheristus or Hoplobrotula.

References

  1. ^ Schwarzhans, Werner; Stringer, Gary L. (2020-05-06). "Fish Otoliths from the Late Maastrichtian Kemp Clay (Texas, Usa) and the Early Danian Clayton Formation (Arkansas, Usa) and an Assessment of Extinction and Survival of Teleost Lineages Across the K-Pg Boundary Based on Otoliths". Rivista Italiana di Paleontologia e Stratigrafia. 126 (2). doi:10.13130/2039-4942/13425. ISSN 2039-4942.
  2. Near, Thomas J; Thacker, Christine E (18 April 2024). "Phylogenetic classification of living and fossil ray-finned fishes (Actinopterygii)". Bulletin of the Peabody Museum of Natural History. 65. doi:10.3374/014.065.0101.
  3. "PBDB". paleobiodb.org. Retrieved 2024-02-16.
  4. Stringer, Gary; Schwarzhans, Werner (2021-09-01). "Upper Cretaceous teleostean otoliths from the Severn Formation (Maastrichtian) of Maryland, USA, with an unusual occurrence of Siluriformes and Beryciformes and the oldest Atlantic coast Gadiformes". Cretaceous Research. 125: 104867. Bibcode:2021CrRes.12504867S. doi:10.1016/j.cretres.2021.104867. ISSN 0195-6671.
  5. "Palaeogene Fish Otoliths from Lignite Associated Succession (Cambay Formation) Khadsaliya, Bhavnagar, Gujarat, India". Gondwana Geological Society Nagpur, India. Retrieved 2024-02-16.
  6. Lin, Chien-Hsiang; Steurbaut, Etienne; Nolf, Dirk (2024-06-04). "Early Eocene fish otoliths from the eastern and southern USA". European Journal of Taxonomy. 935: 203–240. doi:10.5852/ejt.2024.935.2557. ISSN 2118-9773.
  7. Nolf, D.; Steurbaut, E. (2004). "Otolithes de poissons de l'oligocene inferieur du Bassin liguro-piémontais oriental, Italie" (PDF). Rivista Piemontese di Storia Naturale.
  8. "PBDB". paleobiodb.org. Retrieved 2024-02-16.
  9. Schwarzhans, Werner; Mörs, Thomas; Engelbrecht, Andrea; Reguero, Marcelo; Kriwet, Jürgen (2017-02-01). "Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei)". Journal of Systematic Palaeontology. 15 (2): 147–170. Bibcode:2017JSPal..15..147S. doi:10.1080/14772019.2016.1151958. ISSN 1477-2019. PMC 5221741. PMID 28077930.
Taxon identifiers
Ampheristus
Stub icon

This article about a prehistoric ray-finned fish is a stub. You can help Misplaced Pages by expanding it.

Stub icon

This Ophidiiformes-related article is a stub. You can help Misplaced Pages by expanding it.

Categories:
Ampheristus Add topic