Jurassic sharks

thumb|left|Life reconstruction of Protospinax annectans Protospinax is an extinct genus of cartilaginous fish from the Middle to Late Jurassic of Europe and Russia. The type species, P. annectans, was found in the Solnhofen limestones of southern Bavaria. Formerly known from only two specimens, further museum specimens of P. annectans were discovered at the Museum of Comparative Zoology of Harvard University in the 1990s, having been misidentified as Squatina and Heterodontus. Six more species, all known only from isolated teeth, have been assigned to Protospinax, though only four including th

Paracestracion is an extinct genus of heterodontiform sharks from Early Jurassic to Early Cretaceous-aged rocks of England, France, Germany and Luxembourg. The genus was first described in 1911 by Ernst Hermann Friedrich von Koken in Karl Alfred von Zittel.

Akaimia is an extinct genus of carpet sharks which existed across Europe. Two species are known, the type species A. altucuspis from the middle or late Jurassic (Callovian or Oxfordian age) of Ogrodzieniec near Zawiercie, southern Poland, and A. myriacuspis, from the middle Jurassic (Callovian) of the Oxford Clay, near Peterborough. It was first named by Jan Rees in 2010.