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Chondrosteidae Temporal range: Sinemurian to Toarcian PreꞒ Ꞓ O S D C P T J K Pg N
Skeleton of Strongylosteus hindenburgi
Skeletal reconstruction of Chondrosteus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Subclass:	Chondrostei
Order:	†Chondrosteiformes Aldinger, 1937
Family:	†Chondrosteidae Egerton, 1858
Included genera
†Chondrosteus Egerton, 1858 (ex Agassiz, 1834) †Gyrosteus Woodward, 1889 (ex Agassiz, 1834) †Strongylosteus Jaekel, 1931

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 or the separate order Chondrosteiformes within the Chondrostei. Three genera are known, Chondrosteus, Gyrosteus, and Strongylosteus. 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.

See also

• Prehistoric fish
• List of prehistoric bony fish

References

1. 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.
2. ^ Agassiz, Louis (1833–43). Recherches sur les Poissons Fossiles, Tome I. Imprimerie de Petitpierre, Neuchâtel. pp. 1–188.
3. 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.
4. 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.
5. 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.
6. 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

• Media related to Chondrosteidae at Wikimedia Commons

v t e Chondrostei
Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Clade: Actinopteri Actinopterygii see Actinopterygii Chondrostei see below↓ Chondrostei
Chondrostei †Birgeria? †Errolichthys? †Gualolepis? †Neochallaia †Bobasatraniiformes? †Guildayichthyidae? †Saurichthyiformes? †Coccolepididae Barbalepis Coccolepis Condorlepis Iyalepis Morrolepis Plesiococcolepis Sunolepis Toarcocephalus Acipenseriformes †Cylindracanthus? †Eochondrosteus †Chondrosteidae Chondrosteus Gyrosteus Strongylosteus †Peipiaosteidae Liaosteus Peipiaosteus Spherosteus Stichopterus Yanosteus Acipenseroidei Polyodontidae †Crossopholis †Paleopsephurus †Parapsephurus Polyodon †Protopsephurus †Psephurus †Pugiopsephurus Acipenseridae Acipenser †Anchiacipenser †Engdahlichthys Huso †Priscosturion †Protoscaphirhynchus Pseudoscaphirhynchus Scaphirhynchus

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• Acipenseriformes
• Fossils of Great Britain
• Jurassic fish of Europe
• Jurassic bony fish
• Prehistoric ray-finned fish families
• Chondrostei stubs
• Prehistoric Chondrostei stubs
• Jurassic fish stubs