CASH: FOSSIL MOLLUSCA. 
83 
Corbicella 
J urassic 
Crenatula 
Pinna ... 
... 
Carboniferous, Jurassic, 
Cretaceous 
Axinus ( = Schizodus) 
Permian 
Trichites 
Jurassic 
Tri^onia 
Jurassic, Cretaceous 
Posidonomya 
Carboniferous, Jurassic 
Pteroperna 
Jurassic 
Pterinea 
... 
Silurian, Carboniferous 
Cassianella 
Jurassic 
Monotis 
,, Permian 
Myalina 
Permian 
A rca ... 
Carboniferous, Jurassic 
Macrodon 
Permian, Jurassic 
Cuculloea 
... 
Carboniferous, Jurassic, 
Cretaceous 
Isoarca 
Jurassic 
Pectunculus 
Pleistocene 
Nucula 
... 
Carboniferous, Jurassic, 
Cretaceous, Pleistocene 
Leda 
Carboniferous, Permian, Jurassic, 
Pleistocene 
Leptodomus 
Carboniferous 
Orthonota 
Silurian 
Pecten 
Carboniferous (?) Jurassic, 
Cretaceous 
Hinnites 
Jurassic 
Lima 
„ Cretaceous 
Limea 
Jurassic 
Spondylus 
Cretaceous 
Ctenodonta 
Carboniferous 
Anomia 
Jurassic, Pleistocene 
Plicatula 
Jurassic, Cretaceous 
Ostrea 
... 
j> >> 
Gryphaea 
Jurassic 
Sowerbya 
Quenstedtia 
>» 
Placunopsis 
Cretaceous 
Exogyra 
)> 
Dianchora 
>> 
The rang-e of these Fossils in time in Yorkshire is shown 
by the tables following- : — 
