" |Crocodiles|27. Crocodilidæ | | | | | | " |Gavials |28. Gavialidæ | | " | | | | | |29. Teleosauidæ | | " | |30. Belodontidæ | | Dicynodont-| |31. . . . | | ia. | | | | Ornitho- | |32. Dinosauria | | scelida | | | | | | | | | | | | | | | | | | | | | |33. Compsognatha | | | | | | Pterosaur- |Flying |34. Pterodactylidæ| | ia. | reptile | | | | | | | | | | | --------------------------------------------------- _Aves._ ------------------------------- ILLUSTRATIVE | RANGE OF THE GENERA. | ORDER. --------------|---------------- Pyxis, Cinyxis|}The |} Chelonia Emys, Cistudo |} are first |} known to Chelys, |} occur in Chelodina |} Gymnopus |} the Lias. Cryptopus |} Sphargis, |}To recent. Chelone | Plesiosaurus |} Pliosaurus |}Trias to |} Chalk Nothosaurus |} inclu- Simosaurus |} sive. Pistosaurus |} | |recent } | } Sphenodon or | } Rhyncocepha-| } lus |Solenhofen} | slates to} | Trias } |Permian } | }Permian |recent }to | }recent. | " } | } | " } | } | " } | } |Recent }Permian Dolichosaurus|Chalk }to Mososaurus |Chalk }recent. Chirotes | } Amphisbæna | Python, |} Tortrix |} |} |} Older Crotalus |} Tertiary |} to recent. |} Icthyosaurus |Trias(?) to |chalk inclusive. Alligator |} Caiman |} Jacare |} Crocodilus |} Mecistops |} Rhynchosuchus |} Trias to Gavialis |} recent. Teleosaurus |} Belodon |} Dicynodon | } Trias. Oudenodon | } Thecodonto- |Trias } saurus | }Mesozoic Scelidosaurus |Lias }forma- Megalosaurus {| Middle & } tions. Iguanodon {| Upper } {| Mesozoic }