Chondrosteidae /ˌkɒndroʊstiˈaɪdiː/ is a family of extinct marine actinopterygian fishes, known from the Early Jurassic of Europe. They are closely related to modern sturgeons and paddlefish of the order Acipenseriformes, and are either placed as part of that order[3] or the separate order Chondrosteiformes within the Chondrostei.[4] Three genera are known, Chondrosteus, Gyrosteus, and Strongylosteus.[5] Included species were of large size, with body lengths ranging from 2 metres (6.6 ft) up to 7 metres (23 ft). Their skeleton was largely made up of bones (unlike living chondrosteans), but ossification was reduced compared to other ray-fins.[6]
| Chondrosteidae Temporal range:
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| Skeleton of Strongylosteus hindenburgi | |
_(1889)_(20393616949).jpg)
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| Skeletal reconstruction of Chondrosteus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Subclass: | Chondrostei |
| Order: | †Chondrosteiformes Aldinger, 1937 |
| Family: | †Chondrosteidae Egerton, 1858 |
| Included genera | |
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See also
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References
edit- ^ L. Grande & W.E. Bemis (1996). "Interrelationships of Acipenseriformes, with comments on "Chondrostei".". In M. L. J. Stiassny; L. R. Parenti & G. D. Johnson (eds.). Interrelationships of Fishes. Academic Press, San Diego. pp. 85–115.
- ^ a b Agassiz, Louis (1833–43). Recherches sur les Poissons Fossiles, Tome I. Imprimerie de Petitpierre, Neuchâtel. pp. 1–188.
- ^ Hornung, Jahn J.; Sachs, Sven (2020-01-22). "First record of Gyrosteus mirabilis (Actinopterygii, Chondrosteidae) from the Toarcian (Lower Jurassic) of the Baltic region". PeerJ. 8: e8400. doi:10.7717/peerj.8400. ISSN 2167-8359. PMC 6982408. PMID 32002331.
- ^ Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016-02-22). Fishes of the World. Wiley. doi:10.1002/9781119174844. ISBN 978-1-118-34233-6.
- ^ Bemis, William E.; Findeis, Eric K.; Grande, Lance (1997). "An overview of Acipenseriformes". Environmental Biology of Fishes. 48 (1–4): 25–71. Bibcode:1997EnvBF..48...25B. doi:10.1023/A:1007370213924. S2CID 24961905.
- ^ Hilton, Eric J.; Forey, Peter L. (2009). "Redescription of †Chondrosteus acipenseroides Egerton, 1858 (Acipenseriformes, †Chondrosteidae) from the lower Lias of Lyme Regis (Dorset, England), with comments on the early evolution of sturgeons and paddlefishes". Journal of Systematic Palaeontology. 7 (4): 427–453. Bibcode:2009JSPal...7..427H. doi:10.1017/S1477201909002740. S2CID 86821521.
External links
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Media related to Chondrosteidae at Wikimedia Commons
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