Chondrosteidae /ˌkɒndrstiˈd/ is a family of extinct marine actinopterygian fishes in the order Acipenseriformes.[3][4] Three genera are known from the Early Jurassic of Europe, 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]

Temporal range: Sinemurian to Toarcian[1]
Strongylosteus hindenburgi Tubingen.JPG
Skeleton of Strongylosteus hindenburgi
Catalogue of the fossil fishes in the British Museum (Natural History) (1889) (20393616949).jpg
Skeletal reconstruction of Chondrosteus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Acipenseriformes
Suborder: Chondrosteoidei
Family: Chondrosteidae
Egerton, 1858
Included genera

Evolutionary relationshipsEdit

Chondrosteidae are related with the Late Jurassic to Early Cretaceous Asian family Peipiaosteidae, and with living sturgeon and paddlefish (Acipenseroidei).[6] The Early Triassic Eochondrosteus from China is more basal than all other aforementioned acipenseriforms.[7]

See alsoEdit


  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. ^ a b Agassiz, Louis (1833–43). Recherches sur les Poissons Fossiles, Tome I. Imprimerie de Petitpierre, Neuchâtel. pp. 1–188.
  3. ^ Wiley, Edward G. (1998). Paxton, J. R.; Eschmeyer, W. N. (eds.). Encyclopedia of Fishes. San Diego: Academic Press. pp. 76–79. ISBN 0-12-547665-5.
  4. ^ "The Chondrostei: History, Phylogeny, and Polyploidy". Palaeos. Retrieved March 16, 2012.
  5. ^ Bemis, William E.; Findeis, Eric K.; Grande, Lance (1997). "An overview of Acipenseriformes". Environmental Biology of Fishes. 48 (1–4): 25–71. doi:10.1023/A:1007370213924. S2CID 24961905.
  6. ^ a b 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. doi:10.1017/S1477201909002740. S2CID 86821521.
  7. ^ Lu, Liwu; Tan, Kai; Wang, Xi (2020). "Redescription of Eochondrosteus sinensis (Acipenseriformes, Actinopterygii) and its geological age". Earth Science Frontiers. 27 (6): 371–381.

External linksEdit