Pulalius vulgaris
Tumidocarcinidae
Quadropedia prima
Ranidina willapensis
Lyreididae
Raninoides danicus
Raninidae
Raninoides fulgidus
Raninidae
Rhamphorhynchus phyllurus
Rhamphorhynchidae
Saurocephalus lanciformis
Saurodontidae
Scapanorhynchus rhaphiodon
Mitsukurinidae
Scapanorhynchus texanus
Mitsukurinidae
Scaphites depressus
Scaphitidae
Selmasaurus russelli
Mosasauridae
Serratolamna maroccana
Cretoxyrhinidae
Sigillaria elegans
Sigillariaceae
Siren lacertina
Sirenidae
Squalicorax falcatus
Anacoracidae
Squalicorax kaupi
Anacoracidae
Squalicorax pristodontus
Anacoracidae
Sternotherus carinatus
Kinosternidae
Stigmaria ficoides
Lepidodendraceae
Strombina lissa
Columbellidae