oS DRAKE AND SHEPPARD: CLASSIFIED LIST OF ORGANIC REMAINS. 
CORALLIAN ROCKS. 
Including Upper Calcareous Grit, Coral Rag and Upper 
Limestone, Middle Calcareous Grit, Lower Limestone. 
Bibliography. 
1. HuDLESTON and Blake. " Tlie Jurassic Rocks of 
Yorkshire," Proc. Geol. Asso., 1878, etc., "The 
Corallian Rocks of England," Quart. Journ. Geol. 
Soc, 1877. 
2. C. Fox Strangways. " The Jurassic Rocks of England," 
Memoirs of Geological Survey, Vol. I., Yorkshire, 
1892. 
3. In the collection of H. C. Drake. 
4. Collected by G. Lether, now in Hull Museum. 
5. " Fossil Sponges (British)," a Monograph by G. J. 
Hinde, Palseontological Society, 1893, Part III. 
6. Proc. Yorks. Geol. and Poly. Soc, 1900. 
Corallian Rocks. 
Embracing the Zones of Ammonites pcrarmalus and Ammonites 
plicat'dis. 
i name. 
North 
Grimston. 
Settring- 
ton. 
Langton 
, Wold. 
j Reptilia. 
i Pliosmirus terctideus, Owen ]\LS. = P. 
1 brachydeir us, Ow^ri [teeth) 
\ Tdeosaurus sp. (teeth) 
1. 2. 3, 4 
1, 3, 4 
Pisces. 
Hybodus cf. gross iconics, Ag. (teeth) 
obtusus, Ag. (teeth) 
Gyrodus punctatus, Ag. 
Lepidotus sp. (scales and teeth) ... 
Ischyodus egertani, Ag. 
L 3. 4 
1, .3, 4 
1, 3 
1, 3, 4 
3 
Cephalopoda. 
A mmonites {Perisphinctes) varicostatus. 
Buck.... 
„ ., decipiens. Sow. 
1 ,, ,, plicatilis. Sow. 
1 biplex. Sow. ... 
\:l 
1 
1 
1, 2 
1 2 
