Coelacanthus: Difference between revisions
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'''''Coelacanthus''''' ("Hollow Spine") is a [[genus]] of extinct [[coelacanth]]s that first appeared during the [[Permian]] period. It was the first [[type genus|genus]] of coelacanths described and the order '''[[Coelacanthiformes]]''' is named after it. |
'''''Coelacanthus''''' ("Hollow Spine") is a [[genus]] of extinct [[coelacanth]]s that first appeared during the [[Permian]] period. It was the first [[type genus|genus]] of coelacanths described and the order '''[[Coelacanthiformes]]''' is named after it. |
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[[File:Coelacanthus_whitea.JPG|thumb|250px|restoration of two individuals of ''C. whitea'']] |
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==Description== |
==Description== |
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They bear a superficial similarity to the living ''[[Latimeria]]'', though they were smaller, and had more elongated heads. Individuals grew up to 3 feet in length, had an elongate codavypter or supplementary tail lobe, and had small lobed fins, suggesting that ''Coelacanthus'' were open-water predators. |
They bear a superficial similarity to the living ''[[Latimeria]]'', though they were smaller, and had more elongated heads. Individuals grew up to 3 feet in length, had an elongate codavypter or supplementary tail lobe, and had small lobed fins, suggesting that ''Coelacanthus'' were open-water predators. |
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Revision as of 23:45, 6 November 2020
| Coelacanthus Temporal range: Late Permian to Early Triassic
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| Coelacanthus granulatus | |
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| Genus: | Coelacanthus Agassiz, 1836
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Coelacanthus ("Hollow Spine") is a genus of extinct coelacanths that first appeared during the Permian period. It was the first genus of coelacanths described and the order Coelacanthiformes is named after it.
Description
They bear a superficial similarity to the living Latimeria, though they were smaller, and had more elongated heads. Individuals grew up to 3 feet in length, had an elongate codavypter or supplementary tail lobe, and had small lobed fins, suggesting that Coelacanthus were open-water predators.
Distribution and time
Coelacanthus is known from Late Permian and Early Triassic deposits in Europe and Canada, although the referred species C. welleri, known from Iowa, is of Late Devonian (Famennian) age. It survived the Permian–Triassic extinction event, and one species, C. banffensis, is known from the Early Triassic. Coelacanthus minor was considered by Woodward (1891) as potentially belonging to the Triassic genus Heptanema,[1] while Martin and Wenz (1984) considered Coelacanthus lunzensis a possible synonym of Garnbergia.[2]
Species
- Coelacanthus banffensis Lambe, 1916
- Coelacanthus gracilis Agassiz, 1844
- Coelacanthus granulatus Agassiz, 1836
- Coelacanthus welleri Eastman, 1908
References
- ^ Woodward A. S. 1891. Catalogue of the Fossil Fishes in the British Museum (Natural History). Part II. London.
- ^ M. Martin and S. Wenz. 1984. Découverte d'un nouveau Coelacanthidé, Garnbergia ommata n.g., n.sp., dans le Muschelkalk supérieur du Baden-Württemberg. Stuttgarter Beiträge zur Naturkunde Serie B (Geologie und Paläontologie) 105:1-17
External links
Mikko's Phylogeny Archive on Coelacanthiformes
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