Eutrichiurides

Eutrichiurides Temporal range: Early Paleocene to Early Oligocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Scombriformes
Family:	Trichiuridae
Genus:	† Eutrichiurides Casier, 1944
Type species
†Trichiurides delheidi Leriche, 1908
Species
See text

Eutrichiurides ("true Trichiurus resemblance") is an extinct genus of cutlassfish known from the early Paleocene to the early Oligocene. ^{[1] [2]}

Taxonomy

Species within this genus include: ^[3]

• †E. africanusDartevelle & Casier, 1949 - mid-late Paleocene (Selandian to Thanetian) of Angola (Landana Formation) ^{[4] [5]}
• †E. delheidi(Leriche, 1908) (type species)- Early Oligocene of Belgium (Boom Clay) (=Trichiurides delheidiLeriche, 1908) ^[6]
• †E. orpiensis(Leriche, 1906) - Early Paleocene of Morocco & North Dakota, USA (Cannonball Formation), Late Paleocene of Belgium, Early Eocene of England ^{[7] [8]}
• †E. plicidens(Arambourg, 1952) - middle Eocene (early Lutetian to middle Bartonian) of Alabama, USA (Tallahatta, Lisbon and Gosport Sand Formations), potentially Bartonian of Libya ^[9]
• †E. goberti Casier, 1944 - Early Eocene of Tunisia (Gafsa-Metlaoui Basin) ^[10]
• †E. termieri(Arambourg, 1952) - Late Paleocene/Early Eocene of Morocco (Ouled Abdoun Basin) ^{[11] [12]}

E. delheidiis the only member of this genus known from partial skull elements (including a partial jawbone) instead of only isolated teeth. The former species E. winkleriCasier, 1946 from the London Clay ^[13] has been moved to its own genus, Macroynis , as an indeterminate trichiuroid, as there is no evidence that it is a member of this genus. ^[6]

Fossil teeth of an indeterminate Eutrichiurides have been recovered from the high-latitude Eureka Sound Formation of Nunavut, Canada, suggesting that this genus ranged as far north as the Arctic Circle during the Early Eocene Climatic Optimum. ^[14] Indeterminate teeth are also known from the middle Eocene-aged Shark River Formation of New Jersey, ^[15] the Early Eocene-aged Khuiala Formation & Cambay Shale of Gujarat & Rajasthan, India, ^{[16] [17]} the late Eocene-aged Fayum Depression of Egypt, ^[18] and the Early Oligocene of the Paris Basin of France. ^[19]

Description

Eutrichiurides species were very similar in form and build to modern cutlassfish, in that they were long and slender, blade-shaped fishes with elongated jaws possessing fangs and needle-shaped teeth. ^[20]

See also

• Paleontology portal
• Fish portal

• Prehistoric fish
• List of prehistoric bony fish

References

1. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on July 23, 2011. Retrieved 2009-02-27.
2. Paleontologia
3. Scombroidei
4. Murray, A.m. (2000). "The Palaeozoic, Mesozoic and Early Cenozoic fishes of Africa" . Fish and Fisheries. 1 (2): 111–145. Bibcode:2000AqFF....1..111M. doi:10.1046/j.1467-2979.2000.00015.x. ISSN   1467-2979.
5. "Geossítios de Vertebrados Fósseis de Angola - ProQuest". www.proquest.com. Retrieved 2025-03-05.
6. Beckett, Hermione T.; Giles, Sam; Johanson, Zerina; Friedman, Matt (2018). "Morphology and phylogenetic relationships of fossil snake mackerels and cutlassfishes (Trichiuroidea) from the Eocene (Ypresian) London Clay Formation" . Papers in Palaeontology. 4 (4): 577–603. Bibcode:2018PPal....4..577B. doi:10.1002/spp2.1221. hdl: 2027.42/146609 . ISSN   2056-2802.
7. Smith, Thierry; Smith, Richard (1995). "SYNTHESE DES DONNEES ACTUELLES SUR LES VERTEBRES DE LA TRANSITION PALEOCENE-EOCENE DE DORMAAL (BELGIQUE)" (PDF). Bulletin de la Société belge de Géologie, T. 104 (1–2): 119–131.
8. Cvancara, Alan M.; Hoganson, John W. (1993-03-18). "Vertebrates of the Cannonball Formation (Paleocene) in North and South Dakota" . Journal of Vertebrate Paleontology. 13 (1): 1–23. Bibcode:1993JVPal..13....1C. doi:10.1080/02724634.1993.10011484. ISSN   0272-4634.
9. Ebersole, Jun A.; Cicimurri, David J.; Stringer, Gary L. (2019-12-06). "Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths". European Journal of Taxonomy (585). doi:10.5852/ejt.2019.585. ISSN   2118-9773.
10. Ben Hassen, Aida; Trichet, Jean; Disnar, Jean-Robert; Belayouni, Habib (2010-12-01). "Pétrographie et géochimie comparées des pellets phosphatés et de leur gangue dans le gisement phosphaté de Ras-Draâ (Tunisie). Implications sur la genèse des pellets phosphatés". Swiss Journal of Geosciences (in French). 103 (3): 457–473. Bibcode:2010SwJG..103..457B. doi:10.1007/s00015-010-0029-x. ISSN   1661-8734.
11. Rana, R. S.; Kumar, K.; Singh, H. (2004). "Vertebrate fauna from the subsurface Cambay Shale (Lower Eocene), Vastan Lignite Mine, Gujarat, India". Current Science. 87 (12): 1726–1733. ISSN   0011-3891. JSTOR   24109773.
12. Arambourg, Camille (1885-1969) Auteur du texte; Signeux, Jeanne Auteur du texte; Bergounioux, Frédéric-Marie (1900-1983) Auteur du texte (1952). Les vertébrés fossiles des gisements de phosphates (Maroc, Algérie, Tunisie) / par Camille Arambourg, ... ; avec la collaboration de Jeanne Signeux, ... ; Appendice : les chéloniens fossiles de Gafsa par F.-M. Bergounioux, ... ; Protectorat de la République française au Maroc Direction de la production industrielle et des mines Division des mines et de la géologie Service géologique Notes et mémoires N° 92.
13. Monsch, Kenneth A. (2004). "Revision of the scombroid fishes from the Cenozoic of England" . Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 95 (3–4): 445–489. Bibcode:2004EESTR..95..445M. doi:10.1017/S0263593300001164. ISSN   1755-6929.
14. Gottfried, Michael D.; Eberle, Jaelyn J. (2018). "New records from Banks Island expand the diversity of Eocene fishes from Canada's western Arctic Greenhouse". Arctic Science. 4 (1): 16–24. doi:10.1139/as-2017-0007. hdl: 1807/80508 .
15. Foster, Shana L.; Maisch, Harry M.; Gardiner, Michaela A.; Becker, Martin A. (2020-01-01). "Osteichthyans from the Shark River Formation (middle Eocene) and Kirkwood Formation (early Miocene) Contact, Monmouth County, New Jersey, USA". Geological Society of America Abstracts. Geological Society of America Abstracts with Programs. 52: 344334. Bibcode:2020GSAA...5244334F. doi:10.1130/abs/2020SE-344334.
16. Rana, R. S.; Kumar, K.; Singh, H. (2004). "Vertebrate fauna from the subsurface Cambay Shale (Lower Eocene), Vastan Lignite Mine, Gujarat, India". Current Science. 87 (12): 1726–1733. ISSN   0011-3891. JSTOR   24109773.
17. Kumar, Kishor; Rana, Rajendra Singh; Singh, Hukam (2007). "Fishes of the Khuiala Formation (Early Eocene) of the Jaisalmer Basin, Western Rajasthan, India". Current Science. 93 (4): 553–559. ISSN   0011-3891. JSTOR   24099224.
18. Zalat, Abdelfattah A.; Khalil, Hamza M.; Fathy, Mohamed S.; Tarek, Rana M. (2017-12-01). "Taxonomy and morphological study on the vertebrate remains of Shark and rays fauna from the Middle and Late Eocene succession, Fayoum Depression, Egypt". Delta Journal of Science. 38 (2): 219–233. doi:10.21608/djs.2017.139461. ISSN   1012-5965.
19. Merle, Didier; Baut, Jean-Paul; Ginsburg, Léonard; Sagne, Claire; Hervet, Sophie; Carriol, René-Pierre; Vénec-Peyré, Marie-Thérèse; Blanc-Valleron, Marie-Madeleine; Mourer-Chauviré, Cécile; Arambol, Daniel; Viette, Philippe (2002-01-01). "Découverte d'une faune de vertébrés dans l'Oligocène inférieur de Vayres-sur-Essonne (bassin de Paris, France) : biodiversité et paléoenvironnement" . Comptes Rendus Palevol. 1 (2): 111–116. Bibcode:2002CRPal...1..111M. doi:10.1016/S1631-0683(02)00018-0. ISSN   1631-0683.
20. "F032 - CRETACEOUS EUTRICHIURIDES FISH JAW WITH TEETH AND ASSOCIATED BONES IN MATRIX". PALEO DIRECT. Archived from the original on 2016-08-06. Retrieved 2017-06-04.