Strongylosteus
Strongylosteus hindenburgi is an extinct genus of prehistoric bony fish that lived during the early Toarcian stage of the Early Jurassic epoch.A large member of the Chondrosteidae and the largest non reptilian marine vertebrate of the Posidonia shale, with a size between 3 and 4.5 m, and an estimated weight over 800 kg to 1 tonne. Has been suggested as a junior Synonym of Chrondrosteus, although there haven't been any new revisions about the status of the genus. It is related to modern sturgeons, 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 Sturgeons.
