INFERIOR OOLITE SERIES : WOTTON-UNDER-EDGE. 
107 
alternating with softer clayey beds, containing in places much 
concretionary iron-ore. This is one of the finest sections of the 
Cephalopoda Bed, and here many fossils may be obtained.* 
The Freestones, overlaid by the Ragstones, have been quarried 
for road-metal, &c., by the high road a little further north. The 
former beds comprise bands of false-bedded and even-bedded 
oolite, opened up to a depth of 33 feet. They are sparingly 
fossiliferous. Belemnites, Nerin&a, and Ostrea occur, but the 
beds are partially made up of shell-fragments, and they contain 
small rolled fragments of oolite. The top bed has been bored by 
Annelides. (See p. 34.) 
The general succession of the beds is well shown again in 
a quarry on Nibley Knoll, near the Tyndale Monument, and 
in the lane leading towards the village of North Nibley. The 
section is as follows : 
FT. IN. 
["Tough irregular oolitic limestones with 
Rag- Trigonia-bed at base (1 ft. 2 in.) ; 
stones. -( yielding Modiola, Trigonia, TricJiites, 
Terebratula globata, Rhynchonella 
spinosa, &c. - 6 6 
White oolitic freestone and coarse brown 
shelly oolite, bored at top, and current- 
bedded - --- about 22 
Marly and pebbly oolitic layer - 04 
White and brown shelly and nodular 
oolites; Belemnites and Hinnites 
velatus - - - - - 2 
Hard white shelly oolite, bored at top 5 to 7 
Shelly oolitic limestones, with Ammonites, 
Astarte, Gresslya, Pholadomya fidicula, 
Trigonia striata, &c. - - about 8 
The Cephalopoda Bed was well shown in the deep lane-cutting, 
and from it I obtained specimens of Ammonites insignis, A. 
opalinus, A. radians, and A. dispansus. Mr. Buckman, who has 
examined the beds in detail, has published a section of which the 
following is a summary of the portionj of the series below the 
Freestonest : 
FT. IN. 
("Iron-shot marl and limestone, Am. 
opalinus - - - - 1 11 
Rock with Rhynchonella cynocepJiala - 08 
Cephalopoda , Concretionary and oolitic marly beds - 10 2 
"RprT i Hard yellow oolitic rock; A. stnatulus, 
A. insignis - - - - 1 
Oolitic and iron-shot marly rock; A. 
radians - - - - - 7 
_Hard irregular rock ; A. striatulus 1 2 
{Fine yellow sands with concretionary 
layers of sandy limestone, Am. com- 
pactilis, A. sublineatus, Belemnites, 
Amberleya, Turbo, Lima - about 130 
Upper Lias. Clay. 
The grouping of the beds is that adopted in this Memoir. 
Free- 
stones. 
* See also Wright, Quart. Journ. Geol. Soc., Tol. xii., p. 308. 
f Inf. Ool. Ammomten, p. 46. 
