40 GASTEROPODA OF THE INFERIOR OOLITE. 



northwards, this is the next exposure met with. It is a small quarry three miles 

 south-west of Crewkerne Station. There is about six feet of stone in three blocks. 

 The whole is probably in the Murchisonce-zone, if not lower. Waldheimia anglica 

 is very abundant, and the place is remarkable for very pretty species of Trochus or 

 Delphinula. This is the most western point of any of the quarries noted. 



Haselbury (see Profile No. 3, p. 41). — One and three quarter miles north-east 

 of Crewkerne Station. This is a place of considerable importance as a quarry, but 

 it is more remarkable for Echini and Conchifera than for Gasteropoda. Isocardia 

 cordata is a noteworthy fossil here, since its occurrence in Dorsetshire has not 

 often come under my notice. 



It must be allowed that Profile No. 3 is very inferior in interest, for our 

 purpose, to the two preceding, since but few Gasteropoda are noted from this 

 quarry. I have introduced it mainly to show the preponderating importance of 

 the Lower Division, and especially of the Murchisonce-zonQ in this area. The 

 " massive shell-bed with keeled Ammonites " certainly represents nothing higher 

 than the concavus- (Sowerbyi-) zone, whilst all the rest must be in the Murchisonce- 

 zone or lower. The Gasteropoda are probably on the same line as at Drympton, 

 which I conceive to be towards the base of the Murchisona-zone. 



Resume of the south-western half of the Dorset- Somerset District. 



On the coast and for some miles inland the Lower Division of the Inferior 

 Oolite is only feebly represented as a limestone, and, although there is an 

 interesting shell-bed, associated with a line of irony nodules, which may be traced 

 for some miles, containing the fossils of the Mnrchisonce-zone, yet the development 

 and also the fossils of the Upper Division, and notably of the Parkins oni-zone, 

 greatly preponderate. Near Beaminster, and north of that town as far as Hasel- 

 bury, the very reverse of this state of things obtains. With the single exception 

 of the quarry at Broadwinsor all the fossiliferous exposures known to me are in 

 the Lower Division, and for the most part low down in that division, which is 

 thicker than towards the coast. 



It now remains to consider the north-eastern half of the Dorset-Somerset Dis- 

 trict, and we commence our researches in the vicinity of Yeovil Junction. 



East Coker. — Two and three quarter miles south-west of Yeovil Junction. I 

 have not been here myself, but am informed that there is only about three feet of 

 limestone. The fossils are those of the MureJdsona-zone, and especially Cirrus. 



Stoford. — The limestone quarry is a few hundred yards west of Yeovil Junc- 

 tion. The Inferior Oolite Limestone is only a few feet thick, but affords a very 

 complete section, which may be traced to the base of the Fuller's Earth. It is more 



