CALCIFEEOTIS SANDSTONE OP FIFE. 577 



scales and teeth of small Ganoid fishes, and Leperditia OTceni^ var. 

 SGotoburdigalensis. , 



Limestone No. 9 (3514 feet) is a curious concretionary bed, about 

 nine inches thick, with a rough irregular under surface. It 

 weathers red and yellow, is hard, and is largely composed of con- 

 centric concretions of various sizes *. It contains myriads of 

 Leperditia Okeni, var., along with Spirorbis sp., small Ganoid scales, 

 fragments of wood, and Stigmarian roots and rootlets. 



A few feet of sandstone and shale with Sphenopteris affinis 

 intervene. 



Limestone No. 10 (3525 feet) is very hard and crystalline, 

 weathers red, and is of variable thickness, averaging about a foot. 

 In an inch of shale immediately above there occur a few examples of 

 Myalina modioliformis, the teeth and scales of small Ganoids, Leper- 

 ditia OJreni, var. attenuata, and Sphenopteris affinis. The limestone 

 itself is, in some places, full of the single valves and shell-debris of 

 Pleurophorus elegans, a bivalve which, though so abundant here, has 

 only been observed in two other localities. Along with the latter 

 species are numbers of Littorina scotoburdigalensis (well preserved, 

 and in some cases showing traces of transverse bands of colour) 

 and a variety of Leperditia Okeni. 



Pleurophorus elegans, sp. nov. I Leperditia Okeni, var. attenuata, 



Littorina scotoburdigalensis, Eth. \ J. ^ K. 



Limestone No. 11 (3546 feet) crops out from beneath twenty feet 

 of marl, shale, and sandstone, without fossils. It is likewise an 

 irregular bed, in three or more leaves, with partings of shale. It 

 weathers red, and is about two feet thick. The only fossils found 

 in it are fish-remains, belonging to Hhizodus ornatus, Traquair, and 

 other species. The plates and bones of the former fish are chiefly 

 in the partings of shale, from which they are to be picked up, de- 

 tached by the action of the sea. 



In the marl beneath the limestone occur Spirorbis helicteres and a 

 species of KirTcbya. 



Thirty feet of unfossiliferous strata are seen beneath the last lime- 

 stone, and then the crown of an anticline is reached, beyond which 

 the dip is reversed. A repetition of the beds described, however, is 

 not clearly seen, owing to the disturbance of the strata by faults. 

 Various shell-beds appear, full of Myalina^ which probably repre- 

 sent some of those I have noticed; and beyond the faulted ground, 

 a little to the east of the caves under Randerstone Castle, where 

 the strata dip regularly to the east, there is a marine limestone 

 that requires description, though its exact position in relation to 

 the foregoing section is scarcely to be determined. 



This limestone is about 15 inches in thickness, and is intercalated 

 between beds of sandstone. It is grey in colour, hard, and has 

 shaly partings below. At its base, and forming part of the same 

 bed palaeontologically, come 4 inches of very hard, yellow, cal- 

 careous sandstone, which is soldered on, as it were, to an 8- feet bed 



* This rock reminds me of some of the botrjoidal and globular forms of the 

 Upper Magnesian Limestone of Sandei'land, 



Q.J.G.S. No, 144. 2e 



