INTERREGIONA L CORRELATION TABLE OF THE TRIA S. 



Interregional Zone 



Zone of Pscudomonotts 

 siibcirctdaris, in Siberia. 

 Alaska, Canada, Califor- 

 nia, Peru, and Indian 

 Ocean 



TropittS sabbnllalui i^WMB, \\\ 

 Alps, Himalayas, and Cali- 



Halobia snperba In Alps 

 and California 



Daonella Imnmeli fauna 

 in Alps and Himalayas 



Zone of Anolciies in 

 Alps, Himalayas, Japan, 

 and Nevada 



Ceratiies stibrobusfus in 

 northern Siberia, Salt 

 Range, and Himalayas 



Flemingites fauna 



Zone of Meekoceras 

 fauna in eastern Siberia, 

 Salt Range, Himalayas. 

 Idaho, and California 



Mediterranean Region 



Wengen beds with 

 Protrachyceras archelaus 



3 :? 



Alpine Province 



Koessen beds 



Noric limestones of 

 Hallstatt 



Sandling beds with 

 Tropites subbullatus 



Raibl beds with 

 Trachyceras aonoides 



St. Cassian beds with 

 Trachyceras aon 



Bucenhstein beds with 



Ceratiies nodosus and 



Protrachyceras curionii 



Limestone of Han 



Bulog with Ceratiies 



tritiodosiis in eastern 



Alps and the Balkan 



Peninsula 



Lower Muschelkalk 



with 

 Ceratiies binodosus 



Beds of the Gulf of 

 Ismid in Asia Minor 



Calcareous beds with 



Tirolites cassianiis 



and 



Psendomotioiis clarai 



Unfossiliferous 



ARCTic-pActFic Region 



Oriental Region 



Himalayas 



Pseudommotis ochoiica 



°^^? ofJapan, northern 



Siberia, and Indian 



Ocean 



Ceratite beds of Japan, 

 with 



Ceratiies japon iciis, 

 Anolciies gotischei^ and 



DaniMtes naiananni 



% 



x:.t: ;,. 



o > -v. 



Daonella 

 limestone of 

 Spitz bergeii 



Posidonmnya 

 limestone of 

 Spitz bergeii 



Olenek limestone of 

 northern Siberia 



Proptychites beds of 



Ussuri Bay in eastern 



Siberia, with Meekoceras 



boreak, Ophtceras 



sakmtala. Proptychites 



hiemalis, Pseudosagece- 



ras. and Ussuria 



Noric limestones of 



Himalayas, with 



Sageniies, Halorties, 



and Haueriies 



I Tropites limestone 

 of Kalipani 



Daonella beds with 



Trachyceras 



iibeticutn and 



Trachyceras cf 



aonoides 



Salt Range 



American Region 



California 



Rhaetic plain beds of 

 Plumas County .California 



Beds with 



Trachyceras cf. 



archelaus and 



Daonella lovimeli 



Beds with 



Daonella lomnieli 



and Protrachyceras 



cf ladinum 



Upper Muschelkalk 



with 

 Piychites rugi/er 



Lower Muschelkalk 



with 



Sibirites prahlada 



Ceratiies subrobusttts 



Beds with 

 Hedenstrcemia 

 niojsisovicsi and 

 Dannbites nivalis 



t^/owfli beds, with 

 O^occras, Ophiceral 



^Ifekoceras, Dannbites 



N'^nnites, FlenZgiiei 



^"^^Medlicottfa ' 



Bivalve beds 



Upper Ceratite 

 limestone 



Psetidoinonoiis 



subcircularis 



slates 



Spiri/eritta bed 



Jnvavites beds 



Tropites 



subbull atus beds 



Halobia sitperba 



beds 



Black calcareous 



argillites with 



Protrachyceras 



homfrayi 



Nevada 



Pitudemonotis 



beds, witb 



RhaS(iactras 



and Areettet 



S Sg 



Black siliceous 

 shales of Silver- 

 thorn's Ferry, with 



Anolciies cf 



whitneyi, Ceratiies 



aff. h II mboldtensis, 



Arcestes 



(Joa7itiites) sp. 



Unfossiliferous 

 siliceous shales 



Ceratite sandstone, 



with Ceratiies, 



Acrochordiceras, 



Aspidites, and 



Flemingites 



Ceratite marls, 



with 



Meekoceras, 



Proptychites, 



Ceratiies, and 



Clypites 



Upper, black beds 

 with Hnngarites, 



Piychites, 



Acrochordiceras, 



and Tirolites 



Lower Ceratite 



limestone, with 



Meekoceras, 



Proptychites, and 



Lecanites 



Unfossiliferous 



shaly limestone, 



about 800 feet 



thick 



Lower.gray lime- 

 stone, with 

 Meekoceras 

 gracilitatis, 

 Koninc kites 

 mushbachanus, 

 Gyronites 

 aplanaiits, 

 Nannites, 

 Pseudosageceras, 

 Aspidites, 

 Da7iii bites, 

 Proptychites, and 

 Ussuria 



m 





Meekoceras 

 beds, with 

 Meekoceras 

 gracilitatis, 

 Koninckites 

 iuushbachanns, 

 Gyronites 

 aplanatus, 

 Namiites, 

 Pseudo- 

 sageceras, 

 Aspidites, 

 Flemingites, 

 Ussuria, and 

 Columbites 

 beds 



Pseudo- 



monotis 



beds 



Trachy- 

 ceras 



beds 



