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Strongylosteus Temporal range: Early Toarcian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Strongylosteus hindenburgi fossil, Staatliches Museum für Naturkunde Stuttgart
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	†Chondrosteiformes
Family:	†Chondrosteidae
Genus:	†Strongylosteus Jaekel, 1931
Species:	†S. hindenburgi
Binomial name
†Strongylosteus hindenburgi (Pompeckj, 1914)
Synonyms
†Chondrosteus hindenburgi Pompeckj, 1914

Strongylosteus is an extinct genus of prehistoric ray-finned fish that lived during the early Toarcian age of the Early Jurassic epoch. Its type species is Strongylosteus hindenburgi (monotypy). It is related to modern sturgeon and paddlefish (Acipenseroidei), but with a different kind of mouth than common species, made for hunting prey in open waters, with a strong lower jaw, similar to modern beluga sturgeon.

Strongylosteus is a large member of the family Chondrosteidae and the largest non-reptilian marine vertebrate in the Posidonia Shale, with a size between 3 metres (9.8 ft) and 4.5 metres (15 ft), and an estimated weight over 800 kg to 1 tonne.

Strongylosteus has been suggested as a junior synonym of Chondrosteus, although there haven't been any new revisions about the status of the genus.

See also

• Prehistoric fish
• List of prehistoric bony fish

References

1. ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Retrieved 2009-02-27.
2. Hennig, E. (1925). Chondrosteus Hindenburgi Pomp.---Ein «Stör» des württembergischen Ölschiefers (Lias\epsilon). Palaeontographica (1846-1933), 115–134.
3. 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.

External links

• Media related to Strongylosteus 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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