10 FAUNA OF THE CORNBRASH. 



the matrix of most of the fossils is most like that found at Sutton Benger, of 

 grey colour with narrow black specks. In this case they are probably Cornbrash 

 specimens, but there is the possibility that when brought from excavations they 

 may be taken as Oxfordian instead. 



10. Sutton Bknger is the name applied to many specimens, but there is no 

 Cornbrash at the village itself. It was the home of Wm. Buy, a well-known 

 collector who distributed many fossils obtained by him in the neighbourhood. 

 There is, however, a spot in the middle of the area marked Oxford Clay in the 

 Geological Survey Map where a clay pit is sunk, at the base of which the Cornbrash 

 is reached. It is on the road to Heath Farm, and the section here exposed is : 



Oxford Clay with an 18-in. basement bed composed of fragments of shells, mostly 



Terebratula. 



Ft. in. 



1. Crystalline solid shell limestone of peculiar brashy aspect . . .30 



2. Dark blue brash, weathering brown to the base of the quarry . . — — 



This last bed corresponds, no doubt, to the usual brash, but it is here seen 

 unweathered. It is full of Avicula echinata. Below this there are said to be ten 

 feet or so of stone-bands, below which is reported salt and then some more stone. 

 No doubt some of the fossils recorded by Wright and others have come from this 

 pit, as well as some labelled generally Chippenham. 



11. Chippenham to Malmesbury.— Between Stanton St. Quintin and Lower 

 Stanton there are two deserted quarries showing both Cornbrash and Forest 

 Marble. The one west of the main road to Malmesbury is mainly of the latter rock. 

 Another, by the side of the road leading past Lower Stanton, is interesting as the 

 locality observed by Oppel. It is not entirely Cornbrash. The long section here 

 consists of : 



Ft. in. 



1. Hard brown- weathering lenticular band . . . . .10 



2. Soft yellow brash with few stones . . . .08 



3. Contorted brash, harder pieces arranged in festoons . . .16 



4. More regular brash, with darker and smaller pieces . . .18 



5. Solid band . . . . . . 2 in. to 8 



6. Regular brash . . . . . . .30 



7. Dark blue brash, with argillaceous intervals . . 10 



8. Clay and brash mixed, nodular, it weathers light . . .20 



a. Soft dark clay with hard Forest Marble band . . . .30 



b. Solid shelly false-bedded Forest Marble . . . . . 10 



It is from Beds Nos. 7 and 8 that the dark bluish fossils from this locality have 

 been obtained, and the Cornbrash must extend downwards at least as far as these. 

 The strata below have the character of the Forest Marble. In this locality, 

 therefore, the strata are continuous. 



The shallow opening at the sixth milestone from Chippenham, described by 



