42 
THE MIDDLE LIAS OF NORTHAMPTONSHIRE. 
5.—Hard-bed, much thicker, but not nearly so fossil- 
iferous as 4, containing :— Belemnites (fairly 
plentiful), Crypteenia consobrina, Pecten eequi- 
valvis, Pecten textorius , Ostrea, Modiola, Proto¬ 
car dium truncatum, Pholadomya ambigua, 
Monotis papyria / Astarte stria to-sulcata, Cardinia 
sp.? Pleuromya costata, Terebratula punctata (a 
few), Rhynchonella tetrahedra (one large speci¬ 
men!, Pentacrinite. 
The last four beds occupy about four feet altogether, and, 
judging by the nature of the fossils, there seems to be here 
a fusing together of two or three of the hard beds of the 
Middle Lias. The Bock-bed a little more than a mile to the 
west of this has its normal characters. 
It is probable that the great “ fault” which extends so far 
along the Nen Valley, and cuts out the Middle Lias entirely 
at Weedon, less than four miles away, commences near 
Badby, and has allowed the elimination of the upper 
Clay-beds and almost the Bock-bed there, as it has allowed 
the entire destruction of both hard and soft beds further 
eastward. It is necessary for me to mention, however, that 
about a third of a mile further eastward there is a shallow pit 
showing a ferruginous slialy rock, dipping at an angle of five 
degrees northwards, and containing:— Belemnites, Pecten 
liasinus, T'erebratulce, and a good amount of Calc-spar, which 
seems to be the Bock-bed. 
Of the numerous Marlstone quarries that formerly existed 
south, east, and north of Badby, few remain ; and these few 
are very insignificant. A little of the Bock-bed with a capping 
of Upper Lias may be seen to the north of Preston Capes. 
Between Dodford and Norton, two or three sections of the 
Bock-bed may be still seen ; one just to the north of Dodford 
yielded the following fossils:— Belemnites, Pecten liasinus, 
Pecten cequivalvis, Plicatula spinosa, Rhynchonella tetrahedra, 
Pi. tetrahedra, var. Northamptonensis, Terebratula punctata. 
The other sections are very similar. 
The neighbourhoods of Bugbrook and Bothersthorpe 
have been very good ones for the study of the Marlstone, 
the Bock-bed has been extensively worked, and it is very 
fossiliferous, but there is not one good section near these 
villages now. On Ward’s Farm, at a point about three- 
quarters of a mile to the south-east of Bugbrook, near to the 
canal, there is a shallow pit. The rock is very ferruginous, 
and red or green, according to the amount of weathering it has 
undergone, and a good many of the common fossils can be 
still obtained, Rhynchonella tetrahedra being particularly 
