Biology:Davichthys

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Davichthys is an extinct genus of prehistoric marine ray-finned fish related to modern ladyfish. It is known from the Late Cretaceous of southern Europe, the Middle East, and North Africa. It is one of the earliest known elopids.[1][2][3][4]

Taxonomy

The following species are known:

  • D. dubius (Davis, 1887) - Late Santonian of Lebanon (Sahel Alma) (=Osmeroides dubius Davis, 1887)
  • D. gardneri Forey, 1973 - Late Cenomanian of Lebanon (Sannine Formation)
  • D. lacostei (Arambourg, 1954) - Late Cenomanian of Italy (Scaglia Variegata Alpina Formation, Scaglia Bianca Formation) including Sicily (Argille Varicolori Formation), and Morocco (Jbel Tselfat) (=Holcolepis lacostei Arambourg, 1954)

Description

This fish was usually less than 15 centimeters long, and its appearance must have been very similar to that of the modern Elops . Like the latter, Davichthys had an elongated body with an oval cross-section, slightly flattened laterally. The eyes were rather large, while the mouth had robust jaws. The dorsal fin and the anal fin were rather small; the ventral fins were inserted far back, under the dorsal. The pectoral fins were placed low on the body. The caudal fin was very broad and strongly forked.[2]

See also

  • Prehistoric fish
  • List of prehistoric bony fish

References

  1. "PBDB Taxon". https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=35319. 
  2. 2.0 2.1 Forey, Peter L; Forey, Peter L. (1973-12-21). "A revision of the Elopiform Fishes, fossil and recent". Bulletin of the British Museum (Natural History). Geology. Supplement 10: 1––222. doi:10.5962/p.310418. https://www.biodiversitylibrary.org/part/310418. 
  3. Stiassny, Melanie L. J.; Parenti, Lynne R.; Johnson, G. David (1996-11-08) (in en). Interrelationships of Fishes. Academic Press. ISBN 978-0-08-053492-3. https://books.google.com/books?id=H20q9rqZENsC. 
  4. Amalfitano, Jacopo; Giusberti, Luca; Fornaciari, Eliana; Carnevale, Giorgio (2020-04-03). "UPPER CENOMANIAN FISHES FROM THE BONARELLI LEVEL (OAE2) OF NORTHEASTERN ITALY" (in en). Rivista Italiana di Paleontologia e Stratigrafia 126 (2). doi:10.13130/2039-4942/13224. ISSN 2039-4942. https://riviste.unimi.it/index.php/RIPS/article/view/13224. 

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