Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Classis: Chondrichthyes
Superordo: †Cladodontomorphii
Ordo: †Ctenacanthiformes
Familiae: †Ctenacanthidae - †Heslerodidae
Genera without placement: †Acandylacanthus – †Amelacanthus – †Arauzia – †Coelosteus – †Echinodus – †Eoorodus – †Goodrichthys – †Hybocladodus – †Kaibabvenator – †Lambdodus – †Moyacanthus – †Nanoskalme – †Neosaivodus – †Pororhiza – †Saivodus – †Styracodus
Name
†Ctenacanthiformes Glikman, 1964
References
Glikman, L.S. 1964. Akuly paleogena i ich stratigrafičeskoe značenie (Sharks of Paleogene and their stratigraphic significance). Nauka, Moskva. 229 pp., 76 fig., 31 pl. Reference page.
Ctenacanthiformes is an extinct order of elasmobranch fish. They possessed ornamented fin spines at the front of their dorsal fins and cladodont-type dentition.[1] Ctenacanths are typically thought to have existed from the Devonian to the Late Permian, becoming extinct in the Permian-Triassic extinction event. Members of the family Ctenacanthidae may have survived into the Cretaceous based on teeth found in deep water deposits of Valanginian age in France[2] and Austria.[3] The monophyly of the group has been questioned, with some studies recovering the group as a whole as paraphyletic or polyphyletic.[4]
References
Duffin, Christopher J.; Ginter, Michal (2006). "Comments on the selachian genus Cladodus Agassiz, 1843". Journal of Vertebrate Paleontology. 26 (2): 253–266. doi:10.1671/0272-4634(2006)26[253:COTSGC]2.0.CO;2. S2CID 86094427.
Guinot, Guillaume; Adnet, Sylvain; Cavin, Lionel; Cappetta, Henri (2013-10-29). "Cretaceous stem chondrichthyans survived the end-Permian mass extinction". Nature Communications. 4 (1): 2669. doi:10.1038/ncomms3669. ISSN 2041-1723. PMID 24169620.
Feichtinger, Iris; Engelbrecht, Andrea; Lukeneder, Alexander; Kriwet, Jürgen (2020-07-02). "New chondrichthyans characterised by cladodont-like tooth morphologies from the Early Cretaceous of Austria, with remarks on the microstructural diversity of enameloid". Historical Biology. 32 (6): 823–836. doi:10.1080/08912963.2018.1539971. ISSN 0891-2963. S2CID 92392461.
Luccisano, Vincent; Rambert-Natsuaki, Mizuki; Cuny, Gilles; Amiot, Romain; Pouillon, Jean-Marc; Pradel, Alan (2021-12-02). "Phylogenetic implications of the systematic reassessment of Xenacanthiformes and 'Ctenacanthiformes' (Chondrichthyes) neurocrania from the Carboniferous–Permian Autun Basin (France)". Journal of Systematic Palaeontology. 19 (23): 1623–1642. doi:10.1080/14772019.2022.2073279. ISSN 1477-2019.
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