SOMERSET 91 
Holford. Quarry in angle between streams from Holford Combe and 
Hodders Combe. Station 5 of Hallam, 1934. 
Middle Devonian, Hangman Grits, with numerous casts of gastropods. 
Evans, J. W. and others 1914, p. 102. Hallam, A. D. 1934, p. 437, with 
sketch-maps. 
Geol. Surv. N.S. 295 ; Ord. New Pop. 164. 
Holwell, 3\ miles S.W. of Frome. Quarry on S. side of Shepton Mallet 
road immediately W. of Holwell. 
Carboniferous Limestone (C«-S, subzones), with fissures filled with Rhaetic 
deposits. The source of the earliest British fossil mammal ( Hypsiprymnopsis 
rhaeticus ), the mammal-like reptile Tritylodon and abundant fish-scales and 
teeth ; all obtained by washing the fissure-filling material. 
Moore, C. 1867. Richardson, L. 1911a, p. 63. Geol. map in Welch, 
F B A 1933. 
Geol. Surv. O.S. 19 ; Ord. New Pop. 166. 
Keynsham. Keelings Quarry, Wellsway, Keynsham. 
Jurassic, Lower Lias ( angulata to semicostatum zones), with ammonites, 
other mollusca and brachiopods. 
Tutcher, J. W. 1923, p. 271. 
Geol. Surv. O.S. 19 ; Ord. New Pop. 155. 
Kilve, 5 miles E.N.E. of Williton. Cliffs and foreshore, W. and E. of 
Kilve. . # _ ( 
Jurassic, Lower Lias ( planorbis to semicostatum zones), with abundant 
ammonites and many other fossils. 
Woodward, H. B. 1893, pp. 92-95. 
Geol. Surv. O.S. 20 ; Ord. New Pop. 164. 
Leigh-upon-Mendip, 5 miles W. of Frome. Quarries of the Leigh-upon- 
Mendip Quarry Co. 
Carboniferous Limestone (Cg-Sx subzones), with abundant corals and 
brachiopods. 
Welch, F. B. A. 1933, p. 21, with geol. map. 
Geol. Surv. O.S. 19 ; Ord. New Pop. 166. 
Leigh-upon-Mendip. Tadhill, field near E. comer of Walltyning Planta- 
tion, 300 yds. S.S.W. of Tadhill Farm. Surface material. 
Silurian, Upper Llandovery, fine volcanic tuff with corals, brachiopods, 
molluscs, trilobites, etc. 
Reynolds, S. H. 1907, pp. 220, 226. 
Geol. Surv. O.S. 19 $ (3rd. New Pop. 166. 
Long Ashton, 3 miles S.W. of Bristol. Exposures in Oxhouse Bottom 
and in lane S. of and parallel to this ravine. 
Carboniferous Limestone (K zone), with brachiopods (Camar@toechw s 
Avonia bassa 3 spire-bearing forms, etc.). 
Geol. Surv. O.S. 35 ; Ord. New Pop. 155 and 165. 
Long Ashton. Quarry on N. side of Bristol-Cleveland road, E. of Ashton 
Park and N. of Providence. 
Carboniferous Limestone (S zone), with corals (Lithostrotum) and brachio- 
pods (Composite [Seminula] ficoidea 3 etc.). 
Geol. Surv. O.S. 35 ; Ord. New Pop. 155 and 165. 
Maperton, 3 miles S.W. of Wincanton. Road-cutting between Charlton 
Horethome and Maperton, about J mile S.S.W. of the latter. 
Jurassic, Fuller’s Earth Rock, with abundant brachiopods (Ormthella) and 
bryozoa ( Diastopora ) in top beds. 
Richardson, L. 1909, p. 212. 
Geol. Surv. O.S. 18 5 Ord. New Pop. 166. 
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