NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
13 
SUBDIVISIONS OF EUROPEAN AND SOUTH AMERICAN MESOZOIC AND CENOZOIC ROCKS. 
EUROPE. 
ARGENTINA. 
Quaternary. 
Recent. 
Pleistocene. 
Post-pampian. 
Pliocene. 
Sicilian. 
Astian (Red Crag). 
Plaisancian (Coralline Crag. 
Pampian. 
cJ 
’o 
o 
d 
Miocene. 
Pontian (Anversian)l z . 
Sarmatian (Sahelian)f-' allclean ' 
Tortonian. 
Helvetian. 
Burdigalian (Langhian). 
Aquitanian. 
Araucanian. 
Patagonian. 
a> 
O 
Tertiary. 
' 
Oligocene. 
(Chattian (Casselian). 
Tongrianl Rupelian (Stampian). 
[Latdorfian (Sannoisian, Ligurian). 
Enterrian. 
Magellanian. 
Eocene. 
Bar d toMan} Pliabonian - 
Auversian. 
Lutetian (Parisian). 
Soissoman /Ypresian (Londinian). 
(Suessonian)\Sparnacian (Landenian, part). 
Thanetian (Landenian, part). 
Montian (Garumnian). 
Santa-cruzian. 
(Rocanean.) 
Cretaceous. 
Upper Cretaceous. 
Danian. 
j Maastriehtian] 
Senonian gantoZm u PP er 6ha,k - 
(Coniaeian. j 
Turonian (Middle Chalk). 
Cenomanian {upper Greensand. 
Guaranian. 
Lower Cretaceous. 
Albian (Gault). 
Aptian (Lower Greensand). 
Barremian (Urgonian). 
Neocomian (Wealden). 
Chubutiaii. 
o 
'o 
Upper Jurassic (Malm). 
Portlandian. 
Kimmendgian. 
Sequanian. 
Oxfordian. 
Callovian. 
o 
<n 
Jurassic. 
Middle Jurassic (Dog- 
ger). 
Bathonian (Great Oolite, etc.). 
Bajocian (Inferior Oolite). 
Lower Jurassic (Lias) . 
Toarcian. 
Channouthian. 
Sinemurian. 
Hettangian. 
Rhaetian. 
Upper Triassic (Keu- 
per). 
Juvavian. 
Norian. 
Carinthian. 
Triassic. 
Middle Triassic (Mus- 
chelkalk). 
Ladinian (Tyrolian). 
Virglorian (Amsian, Dinarian). 
• 
Lower Triassic (Bun- 
ter). 
Werfenian (Scythian). 
