Yol. 57.] 



PENDLESIDE GROUP AT PENDLE HILL, ETC, 



373 



The Calder Yalley gives exposures of the Pendleside Beds near 

 Todmorden, and in Crimsworth Dean and Horsebridge Clough, north 

 of Hebden Bridge. Continuous sections from the grits downward 

 are to be seen in the streams which flow through these pretty little 

 gorges. For many years collectors have found these localities very 

 rich in fossil-remains, and a large and interesting fauna has been 

 discovered here. Many of the specimens collected by Mr. Gibson 

 are in the Manchester Museum, Owens College, and were described 

 by Capt. Thomas Brown. ^ An idea of the richness of the fauna 

 may be formed from the following list : — 



The cephalopods included therein 

 (see Cat. Foss. Cephalopoda, Brit. Mus, 

 listed twenty-six species of goniatites. 



Glyphioceras Phillipsii, 

 Gl. vesica. 

 Gl. implicatum. 

 Gl. reticulatum. 

 Gl. Davisi. 

 Gl. diadema. 

 Gl. ccdyx. 

 Gl. stenolobmn (?). 

 Gl. platylohum. 



Gl. nitidum (said to come from 

 Todmorden : history unknown) 



(Capt. Brown figured four species of Orthoceras. Davis enumerates fourteen, 

 most of which are undescribed.) 



Gasteropoda. — Capt. Brown described nine species of spiral shells referred 

 to five genera. Mr. Davis later on listed twenty-three, the majority of which 

 were fortunately nomina nuda. 



This order has been neglected, but we have ourselves only found three species, 

 probably referable to Macrocheilina, the Buccinum elegans, B. Gibsoni, and 

 Pyramis reticulatus of Brown. 



have been identified by Mr. G. C. Crick 

 , Nat. Hist. pt. iii, 1897). Capt. Brown 



BiTnovphoceras discrepans. 

 B. Gilbertsoni. 

 Gast7^oceras carbonarium. 

 G. Listen. 



Nomisraoceras spirorbis. 

 Orthoceras cf. Morrisianum, 



de Kon. 

 0. Steinhaueri. 

 0. annulatum. 

 Coelonautilus bicarinatus. 



LaMELLIBR ANCHIATA . 



Aviculopecten papyraceus. 



A. Samuelsii [? = young of A. 



papyraceus]. 

 Posidoniella IcBvis. 

 P. KirJcmani 

 P. minor. 



Posidoniella vai'iabilis. 

 Schizodus antiqims. 

 Sanguinolites tricostatus. 

 Kiicula, (squalis. 

 Leiopteria longirostris. 



Davis enumerates twenty-eight species, the majority of which are, however, 

 tiowAna nuda. Capt. Brown figured and described fourteen species, several of 

 which are synonyms. 



One or two brachiopods are said to occur, referred to species which 

 are found at various horizons both above and below the Pendleside Group. 



The total absence of corals and protozoa is to be remarked. 

 Crinoids are rare, fragmentary, and very small. 



Pisces. 



Orodus sp., tooth. 

 Cladodus sp., tooth. 



Acrolepis, scales. 

 Elonichthys Aitkeni. 



A few plant-remains occur in the group. 



^ Trans. Manch. Geol. Soc. vol. i (1841) p. 212. In this paper some forty- 

 four species were described and figured : several of the species are synonyms. 



and many of the types have disappeared. 



