part 4] 



CAMBRIAN HORIZONS OF COMLEY. 



37a 



Horizon Ba 3 . Dorypyge-lakei Flags. 



Acrotreta socialis. 

 Acrothyra comleyensis. 



Hyoliihellus micaut 

 Dorypyge lakei. 



The three horizons Baj . Ba 2 , & Ba 3 may be correlated 1 with the Paradoxides- 

 oelandicus Zone of Scandinavia, in which A. socialis is found typically, though 

 it is also recorded from higher zones. 



Horizon Bb,. Paradoxides-intermedius Grits. 



Billingsella sp. indet. 

 Hyolithellus micans var. robustus. 

 Microdiscus punctatus. 

 Conocoryphe sequalis. 

 Conocoryphe bufo. 

 Conocoryphe impressa. 



The relation of this fauna to that of the Paradoxides-tessini Beds of Scan- 

 dinavia (near the C. exsulans sub-zone) and to the Paradoxides-hicksi Zone of 

 South Wales has already been discussed. 2 



Ptychoparia (Liostracus) lata. 

 Ptychoparia (Liostracus) dubia. 

 Agraulos cf. quadrangular is. 

 Strenuella (?) spp. indet. 

 Dorypyge reticulata. 

 Paradoxides intermedins. 



Obolus sp. indet. b. 



Horizon Bb 2 . 



| Acrotreta sp. indet. c. 



Horizon Bb.,. 



No exposures available. By position it is inferred that the Hartshillia 

 fauna, :i Horizons E 15 E 2 , E 3 of the Nuneaton area, if present at Comley, 

 should come here. 



Horizon Bb 4 . Paradoxides-rugiilosns Sandstone. 



Lingulella ferruginea. j Paradoxides rugulosus. 



Lingulella sp. indet. 



Paradoxides rugulosus suggests a reference to the Lower Davidis Fauna of 

 Nuneaton (Horizons F,, F 2 of Illing). 4 



Horizon Bb-. Paradoxides-davidis Fla° - s. 



Lingulella ferruginea. 

 Acrotreta sagittalis. 

 Billingsella cobboldi. 

 Billingsella lindstrcemi var. 

 Microdiscus cf. punctatus. 

 Agnostns fallax. 



This fauna may be compared with those of the Paradoxides-davidis 

 horizons of Scandinavia, South Wales, and Nuneaton. 



Conocoryphe sp. indet. 

 Ptychoparia (Liostracus) pulchella* 

 Ptychoparia (Liostracus) dubia. 

 Agraulos (?) holocephalus. 

 Agraulos cf. quadrangularis. 

 Paradoxides davidis. 



Horizon Be. Billingsella Beds. 



Acrotreta sagittalis. 



Acrotreta schmalenseei var. matleyi. 



Acrotreta, sp. indet. a. 



Billingsella lindstrcemi var. salopi- 



Micromitra sp. indet. 

 Obolus cf. schmalenseei. 

 Obolus gibbosus. 

 Obolus (?) linnarssoni. 

 Acrothele coriacea. 



Eight of these nine species are either identical with, or closely related to, 

 species cited by Dr. C. D. Walcott as occurring in the Paradoxides-forchammeri 

 Zone of Scandinavia, with which the Comley Billingsella Beds are conse- 

 quently correlated. 



i Cobbold, 1913, p. 43. 

 3 V. C. Illing, 1915, p. 399. 



Q. J. G. S. No. 304. 



2 Cobbold, 1913, pp. 39, 40. 

 4 1915, p. 400. 



2jd 



