Article · Wikipedia archive · Last revised Jul 13, 2026

Acrognathus

Acrognathus is an extinct genus of ray-finned fish belonging to the order Aulopiformes. Although no extensive systematic analysis has been performed, it is tentatively placed with the greeneyes in the family Chlorophthalmidae, making it the oldest representative of that family.

Last revised
Jul 13, 2026
Read time
≈ 1 min
Length
253 w
Citations
6
Source
Acrognathus
Temporal range: Upper Cenomanian to Turonian,
Specimen of A. dodgei
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Aulopiformes
Family: Chlorophthalmidae
Genus: Acrognathus
Agassiz, 1836
Type species
Acrognathus boops
Agassiz, 1836
Species
  • A. boops Agassiz, 1836
  • A. dodgei Hay, 1903
  • A. libanicus Woodward, 1901

Acrognathus (from Greek: άκρος ákros, 'high' and Greek: γνάθος gnáthos 'jaw')1 is an extinct genus2 of ray-finned fish belonging to the order Aulopiformes.3 Although no extensive systematic analysis has been performed, it is tentatively placed with the greeneyes in the family Chlorophthalmidae, making it the oldest representative of that family.4

The following species are known:3

  • A. boops Agassiz, 1836 (late Cenomanian/Coniacian to Turonian of the United Kingdom)5
  • A. dodgei Hay, 1903 (late Cenomanian of Lebanon)
  • A. libanicus Woodward, 1901 (late Cenomanian of Lebanon)
References

References

  1. Roberts, George (1839). An etymological and explanatory dictionary of the terms and language of geology. London: Longman, Orme, Brown, Green, & Longmans. p. 3. Retrieved 29 December 2021.
  2. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-07-23. Retrieved 23 February 2009.
  3. "PBDB". paleobiodb.org. Retrieved 2024-02-26.
  4. Davis, Matthew P.; Fielitz, Christopher (2010-12-01). "Estimating divergence times of lizardfishes and their allies (Euteleostei: Aulopiformes) and the timing of deep-sea adaptations". Molecular Phylogenetics and Evolution. 57 (3): 1194–1208. Bibcode:2010MolPE..57.1194D. doi:10.1016/j.ympev.2010.09.003. ISSN 1055-7903.
  5. Friedman, Matt; Beckett, Hermione T.; Close, Roger A.; Johanson, Zerina (2016). "The English Chalk and London Clay: two remarkable British bony fish Lagerstätten". Geological Society, London, Special Publications. 430 (1): 165–200. Bibcode:2016GSLSP.430..165F. doi:10.1144/SP430.18. ISSN 0305-8719.