542 PEOF. E. J. GAE^TOOD OX THE LOWER CAEBONIFEROIIS [DeC. 1912^ 



The Botany Beds {Phillipsastrcea Band). 



These deposits comprise impure limestones and calcareous shales 

 about 20 feet thick, intercalated in the series of grits and shaly 

 sandstones which are coloured as Millstone Grit on the Geological 

 Survey map. The beds lie some distance above the base of this 

 series, and occupy a tract extending for 2 miles in a general east- 

 and-west direction on Hurdorthwaite Moor, south of Botany Parm. 

 They are repeated by a strike-fault with a southward upthrow, 

 which causes an extension of the outcrop round the south of the 

 moor and affords additional exposures. 



The beds are well seen in several old quarries at Scoletree, 

 Howgill Head, and Greenhill. They consist of a few feet of com- 

 pact crystallized limestones at the base, which is overlain by some 

 10 to 15 feet of impure calcareous and ferruginous shales. The 

 shales are hard and nodular in places, but present a curious cellular 

 appearance seemingly due to partial solution. Cherty bauds occur 

 in irregular patches ; these are almost coi] fined to the upper layers, 

 and yield the chief examples of Phillipsastroia. The corals are 

 often replaced by silica, which in thin sections exhibits marked 

 spherulitic structure. The beds are of considerable interest, as 

 they represent the highest horizon in the iS^orth -Western Province- 

 containing a typical Lower Carboniferous marine fauna. 



Fauna. 



-^Hyalostelia x>araUela M'Coy. 



JDihunophyllum muirheadi Nicb. & 



Thomson. 

 Lithodrotion junceum ( Fleming). 

 Lithosirotion portlocM (Bronn). 

 Michelinia cf. tenuisejjta (PhilL). 

 *Phillipsasti'cBa radiata (Woodward). 



Archceocidaris sp. 



Spirorhis sp. 



"^ Anisotrypa sp. 

 Fenestella memhraiiacea (Phill.). 



Yery abundant. 

 Fenestella nodulosa (PhilL). 

 Fenestella pleheia M'Coy. 

 (1) Goniocladia (casts only) Eth. jr. 

 Finnatopora sp. 

 Folypora dendroides M'Coy. 



Lingitla cf. squamiformis Phill. 

 Athyris cf. ambigua j^^hj.). 

 Cliothyris royssi (L'Eveille). 

 Bielasma hastaium (Sby.). 

 Leptmia analoga Phill. 

 ^Productus aculeatus Mart, 

 Productus costatus Sby. 

 Productus clegans M'Coy. 

 Productus cf. longispinus Sby. 



Productus martini J. de C. Sby. 

 Productus plicatilis J. de C. Sby. 

 Productus cf. ptigilis Pliill. 

 Productus aff. punctatus Mart. 



(with more numerous bands than, 



the ij'^ical 2^^nctatus). 

 Productus imnctatus (typical) Mart. 

 Productus scabriculus Mart. 

 Productus sernireticulatus (typical) 



Mart. 

 Productus cf. sulcatiis J. de C. Sby.. 

 ^ Schellwienella radialis (Phill.). 

 Schizophoria resupinatcc (Mart.). 

 Spirifer bisulcatus Sby. 

 Spirtfer triangularis Mart. 



Aviculoptecten dissimilis (Fleming),, 

 Conocardium aliforme Sby. 

 Sanguinolites cf, rnonensis Hind. 



Capidus sp. 

 Tfentalium sp. 

 Loxonema sp. 

 *Naticopsis cf. globosa Hoeningh 

 Pleurotomaria sp. 



aus. 



Ortlioceras sp. 

 ^Prolecanites (1) fragment, 



Petalodus acurainatus Ag. 



