02 MR. L. M. PARSONS 02^ THE CARBONirEROUS [vol. Ixxiil, 



A feature of special interest is the occurrence of a Caninia 

 related to Caninia patula of the South- Western Province. In 

 the faunal list I have named this coi*al Caninia cf. 'patula^ and a 

 brief description of it is given in the palseontological notes ; but, 

 acting on the late Dr. Vaughan's advice, I am classifying, in a 

 sepamte paper, the patulid Caninias under a new generic name. 

 Attention wa:? drawn to the position of the -pat id a division by 

 Dr. Vaughan in the pajDcr on the Burrington- Combe sequence.^ 

 The 'cf. Caninia cylindrica ' mentioned in the Geological Smwey 

 list possibly refers to this patulid form, the true Caninia 

 cylindrica being absent from all parts of the district. 



All of the Ticknall limestone-beds below the barren dolomite 

 yield Zaplirentis ennishilleui. and it is highly probable that the 

 crinoidal limestones at the base of the Cavern Quarry are roughly 

 equivalent to the highest beds on the western side of Breedon-on- 

 the-Hill, where strata consisting originally of highly encrinital 

 limestones have been dolomitized. 



In the limestones (2), foraminifera are plentiful, including 

 JEndotliyra, Valvidina, and seA-eral other genera. ~ Zaj^Jirentis 

 ennisJcilleni and other corals, particularly Litliostrotion junceum, 

 occur in these beds ; but the brachiopod Productus does not occur 

 in such numbers as it does in higher strata. The genus Productus 

 occurs in all of the fossiliferous strata, including the sandy bed ; 

 but it is in the limestones (4) that the Producti occur in great 

 numbers. The species massed together in this way are chiefly 

 variants of the so-called ' Productus giganteus ' including such 

 forms as P. giganteus proper, P. auritus, and latissimoid Pro- 

 ductus, all of which are very abundant. Other fairly common 

 species are P. pugilis, P. concinnus, P. antiquatus, and P. Jongi- 

 spinus. P. cf. semireticulatus and P. scabriculus are compara- 

 tively rare. Chonetes cf. Jiardrensis is faii'ly abundant, but 

 papilionaceous Chonetes are extremely rare. 



The Calke Inlier. 



A few small exposures of Carboniferous Limestone and ' Pendle- 

 side ' Shales occur in Calke Park, a short distance south-east 

 of Ticknall; but the passage of one formation into the other is not 

 seen. The only exposures of the Limestone sequence are along 

 the course of a small stream, Avhich flows eastwards to join that 

 flowing through Dimminsdale. Some small exposures of shale are 

 seen on the eastern edge of the park, near the junction of the two 

 streams. 



The thickness of limestone seen is very small. At two localities 

 the exposures display a thickness of several feet. One of these 



^ S. H. Reynolds & A. Vaughan, ' Fannal & Lithological Sequence in the 

 Carboniferous Limestone Series (Avonian) of Burrington Combe (Somerset) ' 

 Q. J. G. S. vol. Ixvii (1911) p. 374. 



2 E. Wilson, ' On the Occurrence of Foraminifera in the Carboniferous 

 Limestone of Derbyshire ' Midland Naturalist, vol. iii (1880) p. 221. 



