Thrissops

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Thrissops
Temporal range: Kimmeridgian–Tithonian
Thrissops formosus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: †Ichthyodectiformes
Genus: †Thrissops
Agassiz, 1833

Thrissops (from Greek: θρῐ́ξ thrix, 'hair' and Greek: ὄψις ópsis 'look')[1] is an extinct genus of stem-teleost fish from the Jurassic period (Kimmeridgian to Tithonian).[2] Its fossils are known from the Solnhofen Limestone,[3] as well as the Kimmeridge Clay.

Thrissops was a fast predatory fish up to 90 centimetres (35 in) long,[4] that fed on other bony fish.[5] It had a streamlined body with a deeply cleft tail and only very small pelvic fins. Thrissops was one of the smaller members of the order Ichthyodectiformes, which also included larger representatives like Xiphactinus and Saurodon.[6]

References

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  1. ^ Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 171. Retrieved 31 December 2021.
  2. ^ Cavin, Lionel; Piuz, André; Ferrante, Christophe; Guinot, Guillaume (2021-06-03). "Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity". Scientific Reports. 11 (1): 11812. Bibcode:2021NatSR..1111812C. doi:10.1038/s41598-021-90962-5. ISSN 2045-2322. PMC 8175595. PMID 34083600.
  3. ^ Solnhofen und seine Fossilien: Thrissops Archived 2010-04-29 at the Wayback Machine
  4. ^ Ebert, Martin (2025-07-25). "New species of the genus Thrissops (Teleostei, Ichthyodectiformes) in the Upper Jurassic of the Solnhofen-Archipelago (Germany) and Kimmeridge Clay (England)". Zitteliana. 99: 1–32. doi:10.3897/zitteliana.99.159055. ISSN 2747-8106.
  5. ^ Orvar Nybelin, "Versuch einer taxonomischen revision der jurassischen Fischgattung Thrissops Agassiz", Nature (1964)
  6. ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 39. ISBN 1-84028-152-9.


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