Chondrosteidae

The Chondrosteidae are an extinct family of chondrosteans from the Lower Jurassic of Europe. They are closely related to sturgeons and paddlefish.

Chondrosteidae Temporal range: Sinemurian to Toarcian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Skeleton of Strongylosteus hindenburgi
Skeletal reconstruction of Chondrosteus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Subclass:	Chondrostei
Order:	†Chondrosteiformes Aldinger, 1937
Family:	†Chondrosteidae Egerton, 1858
Included genera
†Chondrosteus[2] Egerton, 1858 (ex Agassiz, 1834) †Gyrosteus[2] Woodward, 1889 (ex Agassiz, 1834) †Strongylosteus Jaekel, 1931

Genera

• †Chondrosteus Egerton, 1858 (ex Agassiz, 1834)
• †Gyrosteus Woodward, 1889 (ex Agassiz, 1834)
• †Strongylosteus Jaekel, 1931

References

1. Louis Agassiz (1833–43). Recherches sur les Poissons Fossiles, Tome I. Imprimerie de Petitpierre, Neuchâtel. pp. 1–188.
2. Hornung, Jahn J.; Sachs, Sven (2020). "First record of Gyrosteus mirabilis (Actinopterygii, Chondrosteidae) from the Toarcian (Lower Jurassic) of the Baltic region". PeerJ.
3. Hilton, Eric J. (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". ResearchGate.

Fossil of a Strongylosteus