Ichthyokentema

Ichthyokentema
Temporal range: Early Cretaceous (Berriasian)
Life restoration of I. purbeckensis
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Division: Teleostei
Family: †Ichthyokentemidae
Genus: †Ichthyokentema
Woodward, 1941
Species:
†I. purbeckensis
Binomial name
†Ichthyokentema purbeckensis
(Davies, 1887)
Synonyms

Pholidophorus purbeckensis Davies, 1887

Ichthyokentema ("fish-goad") is an extinct genus of freshwater stem-teleost fish known from the earliest Cretaceous. It contains one species, I. purbeckensis, which is known from the Berriasian-aged Lulworth Formation in the Purbeck Group of Dorset, England. I. purbeckensis was originally described as a species of Pholidophorus by William Davies in 1887, but was moved to its own genus by Arthur Smith Woodward in 1941.

It is the only known member of the family Ichthyokentemidae, which was previously placed in the now-paraphyletic order Pholidophoriformes. More recent studies suggest that Ichthyokentema represents a relatively basal teleost lineage. Some studies have found it to be the secondmost basal lineage, second only to Pleuropholidae, while others have found it to be related to the Ankylophoridae.

See also

References

  1. ↑ "PBDB Taxon". paleobiodb.org. Archived from the original on 2025-03-24. Retrieved 2026-07-08.
  2. ↑ Butt, Raheem; Edgar, Kirsty M.; Maidment, Susannah C. R.; Meade, Luke E.; Reedman, Christopher; Butler, Richard J. (2026-05-29). "A comprehensive review of the tetrapod fauna of the Purbeck Limestone Group (Tithonian–Berriasian) of Dorset, southern England". Journal of the Geological Society. 183 (4): jgs2025–232. doi:10.1144/jgs2025-232. ISSN 0016-7649.
  3. 1 2 Woodward, A. S. (1941). "VIII.— The Mesozoic Ganoid Fishes of the Genus Pholidophorus Agassiz". Annals and Magazine of Natural History. 8 (44): 88–91. doi:10.1080/03745481.1941.9727955.
  4. ↑ Sepkoski, J. (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-07-23. Retrieved 2009-02-27.
  5. ↑ Davies, W. (1887). "I.—On New Species of Pholidophorus from the Purbeck Beds of Dorsetshire". Geological Magazine. 4 (8): 337–339. Bibcode:1887GeoM....4..337D. doi:10.1017/S0016756800193914. S2CID 129013028.
  6. ↑ Arratia, Gloria (2013-11-01). "Morphology, taxonomy, and phylogeny of Triassic pholidophorid fishes (Actinopterygii, Teleostei)". Journal of Vertebrate Paleontology. 33 (sup1): 1–138. doi:10.1080/02724634.2013.835642. ISSN 0272-4634.
  7. ↑ "New Triassic teleosts (Actinopterygii, Teleosteomorpha) from northern Italy and their phylogenetic relationships among the most basal teleosts". Journal of Vertebrate Paleontology. 37 (2) e1312690. 2017-03-04. doi:10.1080/02724634.2017.1312690. ISSN 0272-4634.