In turn, belemnites appear to have formed part of the diet of marine reptiles such as Ichthyosaurs, whose fossilized stomachs frequently contain phosphatic hooks from the arms of cephalopods.
In 2003, a new ophthalmosaurid ichthyosaur was discovered in Cremlingen, Germany.
In addition to its late Jurassic occurrence, Aegirosaurus has recently been discovered from the late Valanginian (Early Cretaceous) of Southeastern France (Laux-Montaux, department of Drôme; Vocontian Basin), the first diagnostic ichthyosaur recorded from the Valanginian.
The material comprising the type series was discovered in the late 19th century from the Phosphate-bearing beds of La Penthèive (Mammilatum Zone; lower Albian) at Louppy-le-Château in eastern France, which have also produced remains of plesiosaurs, ichthyosaurs, and crocodiles.
The ichthyosaur Hudsonelpidia was named after the community when it was first discovered there in the 1960s.