FOSSILS OP NORTH BUCKS AND ADJACENT COUNTIES. 485 
Name. 
Cyprina (?) 
Natica 
Placunopsis socialis, Lye. and Mor. 
Nerinaea Goodhallii, Sow. 
Opis sinnalis, Desh. 
Astarte aliena, Phil. 
Terebratula obovata, Sow. 
„ maxillata, Sow. 
„ digoiia, Sow. 
Isocardia concentrica, Sow. 
„ minima, Sow. ... 
Trigonia impressa, aSoi<;. ... 
„ costata, Park. 
Locality. 
Gayhurst, &c. 
Gryliurst. 
Gayhurst. &c. 
Gayhurst. 
Gayhurst. 
Gayhurst. 
Gayhurst. 
Gayhurst. 
Yardley, Hastiugs. 
Gayhurst. 
Gayhurst. 
Wolvertoii, &c. 
Gayhurst. 
Next we find the Forest- marble, consisting of hard blue limestone 
and clay, which, as it possesses land-plants, is of more interest than 
the Cornbrash, which is much the same as elsewhere. The Forest- 
marble does not in the least resemble the Stonesfield slate, as that of 
Gloucestershire does, in lithological character, not being flaggy or 
splitting into thin plates ; but is a massive and very hard limestone, 
and very intractable. It is well developed around Wolverton 
station and town; and the following fossils have been obtained 
from it : — 
Name. 
Pycnodus parvus, 
„ Bucklandii, Ag. 
Strophodus tenuis, Ag. 
Terebratula maxillata. Sow. 
„ intermedia, Sow. 
Rhynchonella tretrahedra, Sow. ... 
Astarte 
Trigonia Moretonis, Lyc. and Mor. 
Modiola imbricata. Sow. ... 
Myacites calceiformis, Phil. 
„ recurva, Phil. ... 
Cardium Buckmanii, Lyc. and Mor. 
Natica 
Ostrsea gregaria, Sow. 
Nucleolites solodurinus, Ag, 
Spines of Echinites 
Thuytes cupressiformis, Brong. ... 
Thuytes 
Wood and cones ... 
Locality. 
Rowley pits. 
Kowley pits. 
Rowley pits. 
Long-Street. 
Wolverton station. 
Rowley. 
Rowley. 
Long-Street. 
Rowley pits. 
Wolverton. 
Wolverton. 
Haversham. 
Plentiful. 
Yardley, Hastings. 
Rowley. 
Wolverton. 
Wolverton. 
Newport- Pagnel. 
The coniferous plants were found between Wolverton station and 
La\ighton, on the cutting of the Londou and North Western Rail- 
way, or rather in the stone blasted for the purpose of building a 
