Biology:Heterolepidotus

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Heterolepidotus is an extinct genus of prehistoric marine halecomorph ray-finned fish from the Early Jurassic of Europe.[1][2] It is alternately considered a member of the Ionoscopiformes or Ophiopsiformes.[3][4][5]

Taxonomy

The following species are known:[1][2][6]

The genus Brachyichthys, used to contain Late Jurassic species, was formerly thought to be a synonym of Heterolepidotus[6], but has been revived by more recent studies.[3][5] Indeterminate records have been made of Heterolepidotus from the Middle Jurassic (Callovian)-aged Kellaways Formation of England, albeit under an older treatment that placed the Late Jurassic species within Heterolepidotus.[7]

Synonyms

Several Triassic and Late Jurassic species previously assigned to Heterolepidotus have since been reassigned to other genera or synonymized with other species:

  • Heterolepidotus cephalus (Kner, 1866) → Pholidophorus cephalus Kner, 1866[2]
  • Heterolepidotus dorsalis (Agassiz, 1834) → Paralepidotus ornatus (Agassiz, 1834)[8]
  • Heterolepidotus grandis Davis, 1885[9] → Osteorachis macrocephalus Egerton, 1868[2][10]
  • Heterolepidotus parvulus (Agassiz, 1834) → Paralepidotus ornatus (Agassiz, 1834)[8]
  • Heterolepidotus pectoralis (Bellotti, 1857) → Semionotiformes indet.[2]
  • Heterolepidotus radio-punctatus (Agassiz, 1844) → Pholidophorus radio-punctatus Agassiz, 1844[2]
  • Heterolepidotus serratus (Bellotti, 1857) → Semionotiformes indet[2]
  • Heterolepidotus striatus Agassiz, 1837-44 → nomen dubium[2]
  • Heterolepidotus typicus (Winkler, 1861) → Brachyichthys typicus (Winkler, 1861)[5]

See also

  • Prehistoric fish
  • List of prehistoric bony fish

References

  1. ↑ 1.0 1.1 Carrano, M. (2013). "Heterolepidotus". https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=35200&is_real_user=1. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Machado, Giselle Ribeiro de Paula (2015-03-03). Revisão de Ionoscopiformes (Actinopterygii: Neopterygii) e certos táxons fósseis basais de Halecomorphi: morfologia, taxonomia e relações filogenéticas (Thesis). Universidade do Estado do Rio de Janeiro. Archived from the original on 2023-03-30.
  3. ↑ 3.0 3.1 Alvarado-Ortega, Jesús; Espinosa-Arrubarrena, Luis (2008). "A new genus of ionoscopiform fish (Halecomorphi) from the Lower Cretaceous (Albian) lithographic limestones of the Tlayúa Quarry, Puebla, Mexico" (in en). Journal of Paleontology 82 (1): 163–175. doi:10.1666/04-152.1. ISSN 0022-3360. https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/new-genus-of-ionoscopiform-fish-halecomorphi-from-the-lower-cretaceous-albian-lithographic-limestones-of-the-tlayua-quarry-puebla-mexico/2B0A94C1688DF9D073BD300D978A58DD. 
  4. ↑ Ebert, Martin (2018-01-02). "Cerinichthys koelblae , gen. et sp. nov., from the Upper Jurassic of Cerin, France, and its phylogenetic setting, leading to a reassessment of the phylogenetic relationships of Halecomorphi (Actinopterygii)" (in en). Journal of Vertebrate Paleontology 38 (1). doi:10.1080/02724634.2017.1420071. ISSN 0272-4634. Bibcode: 2018JVPal..38E0071E. https://www.tandfonline.com/doi/full/10.1080/02724634.2017.1420071. 
  5. ↑ 5.0 5.1 5.2 Ebert, Martin; Etches, Steve (2025-10-01). "New description of Brachyichthys manselii (Egerton, 1872) comb. nov. (Neopterygii: Halecomorphi) from the Upper Jurassic of Kimmeridge, England" (in en). Zoological Journal of the Linnean Society 205 (2). doi:10.1093/zoolinnean/zlaf119. ISSN 0024-4082. https://academic.oup.com/zoolinnean/article/doi/10.1093/zoolinnean/zlaf119/8268910. 
  6. ↑ 6.0 6.1 Geology, British Museum (Natural History) Department of; Woodward, Arthur Smith (1895) (in en). Catalogue of the Fossil Fishes in the British Museum (Natural History): Actinopterygian Teleostomi of the orders Chondrostei (concluded), Protospondyli, Aetheospondyli, and Isopondyli (in part). order of the Trustees. https://www.google.com/books/edition/Catalogue_of_the_Fossil_Fishes_in_the_Br/ztAKAQAAIAAJ?. 
  7. ↑ Brown, David S.; Keen, John A. (1991). "AN EXTENSIVE MARINE VERTEBRATE FAUNA FROM THE KELLAWAYS SAND [CALLOVIAN, MIDDLE JURASSIC OF LINCOLNSHIRE"]. Mercian Geologist 12 (2): 87–96. https://www.emgs.org.uk/uploads/1/4/9/1/149143154/mg12_2_1991_087_brown_keen_extensive_marine_vertebrate_fauna_from_kellaways_sand_of_lincs_1.pdf. 
  8. ↑ 8.0 8.1 Hornung, Thomas; Kogan, Ilja; Moosleitner, Gero; Wolf, Gerhard; van der Wielen, Joop (2019-12-01). "The Norian fish deposits of Wiestal („Seefeld Member“, Northern Calcareous Alps, Salzburg, Austria) – taxonomy and palaeoenvironmental implications" (in en). Austrian Journal of Earth Sciences 112 (2): 125–165. doi:10.17738/ajes.2019.0008. ISSN 2072-7151. https://reference-global.com/article/10.17738/ajes.2019.0008. 
  9. ↑ Davis, James W. (1885). "On Heterolepidotus grandis, a Fossil Fish from the Lias." (in en). Journal of the Linnean Society of London, Zoology 18 (107): 293–298. doi:10.1111/j.1096-3642.1885.tb02049b.x. https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.1885.tb02049b.x. 
  10. ↑ Woodward, Arthur Smith (1895). "II—On the Liassic Fish Osteorachis Macrocephalus" (in en). Geological Magazine 2 (5): 204–206. doi:10.1017/S0016756800121119. ISSN 1469-5081. https://www.cambridge.org/core/journals/geological-magazine/article/abs/iion-the-liassic-fish-osteorachis-macrocephalus/1AA247C09AAEB2B181064A3954073DA4. 

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