PHYSIOGRAPHY. 81 



Lower Oolite (Bathonian 780). Gasteropods numerous. Sea- 

 urchins, A raucarites, Teleo - 

 saurus, Marsupials, Ram- 

 phorhynchus, Ceteosaurus. 



Middle Oolite (Oxfordian 800). Grypheea, Steneosaurus, 



Archceopteryx. 



Upper Oolite (Portlandian 1,380). Terebratula,Lingula, Turtles, 



Ammonites, and Belem- 

 nites abundant. 



CRETACEOUS. Dicotyledonous Plant*, Sponges, Reptiles, Fora- 

 mini/era, Toothed Birds. 



Neocomian (1,800 Wealden and Lower Greensand). Insects, 



Crocodilia, Mammals, Iguanodon, Zamias, Meyeria. 

 Gault (a stiff blue sandy or calcareous clay, 200). 

 Cenomanian, (350 Upper Greensand). Coniferous trees. 



Turanian (250 without flints). 

 Senonian ^850 with flints). 

 Danian (wanting in England) . 



Sponges, Corals, Foraminifera 

 e.g. Globigerina bulloides, 

 Goniaster, Micrastcr,Mosa- 



saurus, Several Turtles. 

 Ammonites and Belemnites cease. 



TERTIARY OR CAINOZOIC ROCKS. 



1. EOCENE (London, Paris, and Hampshire Basins, 1,900). 



Lower Eocene (Thanet, Woolwich, Reading beds, London clay, 

 Lower Bagshot sand). Sharks, Arctocyon primcevus, Lithornis, 

 Halcyornis, Hyracothcrium, Palceophis Typhceus, Conifers, Figs, 

 Junipers, Citrons. 



Middle Eocene (Bagshot and Bracklesham beds). Turtles, 

 Sharks, Marine shells, Palccothcrium, Pterodon, Coenopithecus. 



Upper Eocene (Barton clay, Upper Bagshot sand). Molluscs, 

 Fish, a Crocodile, Anchitherium, Hyopotamus, Opossums, Cynodon, 

 s, Deinoceras. 



2. OLIGOCENE (Hemstead, Headon, Bovey Tracey beds). Oaks, 

 Willows, Vines, Anoplotherium, Parroquets, Flamingoes, Ibises, 

 Pelicans, Cranes, Eagles, Grouse. 



