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Exceptional fossilization of large tetrapod swimming traces occurs in the Cerin Lagerstätte (Jura Mountains, France). These trackways are imprinted in Jurassic (Late Kimmeridgian) lagoonal fine‐grained limestones and are attributed to giant turtles, which swam with a simultaneous movement of their forelimbs like the modern ones. These turtles swam in very shallow waters close to land, perhaps near a nesting area. As a major consequence, these new ichnologic data place the origin of true large marine turtles during the Jurassic period and not during the Cretaceous period as previously considered on the basis of skeletal remains.

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Hannibaliulus wilsonae, n. gen., n. sp. is described from a series of ten specimens from the early Triassic Grès à Voltzia Lagerstätte of northeast France. e best specimens (holotype and paratype) show a probably equal number of around 44 diplosegments. e a nities of the new species appear to be with the Order Callipodida, but clear apomorphies of that order are not observable on the specimens, both of which appear to be female. Other records of Mesozoic diplopods are brie y discussed and evaluated.