718 
Mollusca. Bracliiopocla. 
Paläolithisches Zeitalter 
Silur- 
Formation 
gCQ 
o 
'S "cl 
■« s 
Mesolithisches 
Zeitalter 
Känolithisches 
Zeitalter 
5. Craniadae. 
Crania Lctzius . . . 
Pseudocrania M’Coy 
Craniscus Dali . . 
Ancistrocrania Dali 
SpondylobolusAPOo?/ 
B. Apygia. 
1. Produetidae. 
Productus Sow. . . 
Productella Hall 
Stroplialosia King . 
Aulosteges Helm. 
Chonetes Fischer . 
? Aulacorhynchus Ditt 
2. Strophomenidae. 
Orthis Dalm. . . 
Bilobites Lin. 
Platystrophia King 
Enteletes Fischer 
Mystrophora Kay sei 
Streptorhyncbus King 
Meekella White . 
Orthisina d’Orb. 
? Yitulina Hall . 
Skenidium Hall . 
Tropidoleptus Hall 
Strophomena JRaf. . 
Stropliodonta Hall 
Leptagonia ISLCoy 
Leptaena Dahn.. 
Davidsonia JBoucli. 
? Amphiclina Laube 
Porambonites Lander 
Syntrielasrna Meek 
3. Koninekinidae. 
Anoplotheca Sandb. 
Koninckina Suess . 
Thecospira Zugmayer 
