926 HISTORICAL GEOLOGY. 



In the Bagshot Sands, England. — Nummulites levigatus li&m., Cardita planicosta 

 Lam., Pleurotoma attenuata Sow., Turritella multisulcata Lam., Conus deperditus Brngt., 

 Lucina serrata Sow. ; Myliohatis Edwardsi Dixon, Carcharodon angustidens Ag., Otodus 

 ohliquus Ag., Galeocerdo latidens Ag., Lanina elegans Ag. Reptiles, I'alceophis typhceus 

 Owen, Gavialis Dixoni Owen, Crocodilus Hastingsice Owen ; Mammals, Dichodon czispi- 

 datus Owen, Lophiodon minimus Cuv., Microchcerus erinaceus Wood, Paloplotherium 

 annectens Owen. 



Barton Series. — Mitra scabra Sow., Valuta ambigua Lam., Typhis pungens Morr., 

 Voluta athleta Sow., Terebellum fusiforme Lam., T. sopita Morr., Cardita sulcata Morr., 

 Crassatella sulcata Sow., Nummulites variolarius Morr. (variety of iV. radiatus Sow.), 

 Chama squamosa Brand. 



The Calcaire Grossier contains many species of Fishes, and also of other tribes 

 identical with those of the Upper Eocene of England. 



Oligocene. — Lodian (= Uinta beds). The Montmartre gypsiferous marls of Paris, 

 Bembridge and Headon beds of the Isle of Wight. Tongrian ( = White River beds; 

 Upper Oligocene, of Europe). Includes the Hempstead beds of the Isle of Wight, the 

 Eontainebleau sandstone, in France, clays with Cyrena convexa, near Tongern in Belgium, 

 the Lower marine Molasse of Switzerland. The name Bupelian is given in Belgium to 

 an upper portion of the beds ; and Bolderian to still higher beds. 



Headon Series. — Planorbis euomphalus Sow., Helix labyrinthica Say, Neritina con- 

 cava Sow., Limncea caudata Edw., Cerithium concavum Desli. ; Lepidosteus ; Reptiles, 

 Emys, Trionyx; Mammals, Palceotherium minus Cnv., Anoplotherium, Anthracotherium, 

 Dichodon, Dichobune, Spalacodon., Hycenodon. 



Bembridge Series (120 feet thick). — Cyrena semistriata Desh., Paludina lenta Desh., 

 P. orbicularis Voltz., Melania turritissima Forbes, Cerithium mutabile Lam., Cyrena 

 pulchra Morr., Bulimus ellipticus Sow., Helix occlusa Edw., Planorbis discus Edw. ; 

 Mammals : Palceotherium magnum Cuv., P. medium Cuv., P. minus Cuv., P. minimum 

 Cuv., P. curtum Cuv., P. crassum Cuv., Anoplotherium commune Cuv., A. secundarium 

 Cuv., Dichobune cervinum Owen, Chceropotamus Cuvieri Owen. 



From the Montmartre gypsum beds of France, and equivalent beds, have been obtained 

 species of the genera Palceotheririm, Anoplotherium, Xiphodon {X. gracilis) ; the Carni- 

 vores, HycBnodon (H. leptorhynchus Blv.), Cynodon Parisiensis Pomel, Bats, and 

 Opossum. 



The Phosphorite beds of Quercy, referred to the Oligocene, have afforded Paloeothe- 

 rium, Anoplotherium, Xiphodon, Hyoenodon, Cynodictis, Cebochcerus, along with Amphi- 

 tragulus, Aceratherium, Necrolemur, and others. 



Lapparent divides the Oligocene into the Tongrian and Aquitanian stages ; and the 

 Tongrian into Sannoisian and Stampian substages. 



The Hempstead beds of England have afforded Corbula pisum, Cyrena semistriata 

 Desh., Cerithium plicatum, C. elegans, Bissoa Chastelii, Paludina lenta, Melania fasciata, 

 M. costata Sow. ; the Mammal, Hyopotamus bovinus Owen. 



Lower Miocene (= John Day Beds, Lower Miocene, in Germany, etc.). — Lacus- 

 trine limestone of Beauce and Meulieres de Montmorency, in France, and limestone of 

 Agenais in Aquitania, southwest France ; Red Molasse, Lignitic Molasse in Switzerland. 



1. Mayencian {Langhian, Burdigalian). — Freshwater Molasse of Switzerland ; beds 

 at Mayence, Belgium. 



2. Helvetian. — Marine Molasse of Switzerland, Faluns of Anjou with Ostrea cras- 

 sissima, etc., of Touraine, in western France, Molasse of the Superga, Italy. 



Upper Miocene. — Tortonian. — Marls with Helix Turonensis in western France; 

 CEningen beds, Leitha limestone near Vienna, Blue marls of Tortone in Italy. Above 



