. Bulletin of the British Museum (Natural History), Geology. OF BRITISH ISLES 107 Pity my s gregaloides Hinton 1923 Pine vole, extinct 1882a Arvicola gregalis Pallas ; Newton : 90-91, pi. xiv, figs 6, 6a. 1891 Microtus {Arvicola) gregalis Pallas ; Newton : 53. 1923a Pitymys gregaloides Hinton : 541-542. 1972 Allophaiomys pliocaenicus Kormos ; Chaline : 104. Localities : West Runton (Upper Freshwater Bed), Norfolk (65) : Newton 1882a, 1891, Hinton 1923a, 1926b, BM(NH). Westbury-sub-Mendip Fissure, Somerset (13) : Bishop 1974, 1975. Kent's Cavern, Devon (6) : Hinton 1926b, Kennard 1945-46, BM(NH
. Bulletin of the British Museum (Natural History), Geology. OF BRITISH ISLES 107 Pity my s gregaloides Hinton 1923 Pine vole, extinct 1882a Arvicola gregalis Pallas ; Newton : 90-91, pi. xiv, figs 6, 6a. 1891 Microtus {Arvicola) gregalis Pallas ; Newton : 53. 1923a Pitymys gregaloides Hinton : 541-542. 1972 Allophaiomys pliocaenicus Kormos ; Chaline : 104. Localities : West Runton (Upper Freshwater Bed), Norfolk (65) : Newton 1882a, 1891, Hinton 1923a, 1926b, BM(NH). Westbury-sub-Mendip Fissure, Somerset (13) : Bishop 1974, 1975. Kent's Cavern, Devon (6) : Hinton 1926b, Kennard 1945-46, BM(NH).. Fig. 23. Distribution of remains of Pitymys gregaloides Hinton in the British Isles. Distribution in the British Isles, P. gregaloides is present in Cromerian deposits at West Runton and at the Westbury Fissure, together with P. arvaloides. Two specimens, one preserved in the British Museum (Natural History), the other in Bristol Museum, are known from Kent's Cavern. The stratigraphical position of these specimens is unknown, but the species has not yet been recorded from any British Hoxnian locality and it is likely that they are of pre-Hoxnian age. General distribution and Systematic remarks. P. gregaloides is present, together with P. arvaloides, at numerous localities in central and southern Europe dated as Cromerian {sensu lato). Genus MICROTUS Schrank 1798 The genus Microtus now holds the dominant position in the subfamily Microtinae, being both most highly differentiated and most individually numerous. In the fossil state molar teeth make up most of the finds, mandibles occurring less commonly and complete skulls only in exceptional cases. Furthermore, it should not be forgotten that in living populations the variability of the molar pattern is sometimes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original w
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