. Bulletin of the British Museum (Natural History), Geology. Ii8 PLEISTOCENE RODENTS Lynx Cave, Denbighshire (67) : Blore 1966. Nazeing, Essex (37) : Hinton 1952, BM(NH). Cowside Cave No. 3, Yorkshire (78) : BM(NH). Hay Wood Rockshelter, Somerset (10) : BM(NH). Somerset levels, Huntspill Cut (8) : Hinton 1952. Nornour, Isles of Scilly (91) : Pernetta & Handford 1970. Creag nan Uamh Cave, Sutherland (83) : Peach & Home Fig. 29. Distribution of fossil remains of Microtus oeconomus (Pallas) in the British Isles. Distribution in the British Isles. M. oeconomus is a widely distribute
. Bulletin of the British Museum (Natural History), Geology. Ii8 PLEISTOCENE RODENTS Lynx Cave, Denbighshire (67) : Blore 1966. Nazeing, Essex (37) : Hinton 1952, BM(NH). Cowside Cave No. 3, Yorkshire (78) : BM(NH). Hay Wood Rockshelter, Somerset (10) : BM(NH). Somerset levels, Huntspill Cut (8) : Hinton 1952. Nornour, Isles of Scilly (91) : Pernetta & Handford 1970. Creag nan Uamh Cave, Sutherland (83) : Peach & Home Fig. 29. Distribution of fossil remains of Microtus oeconomus (Pallas) in the British Isles. Distribution in the British Isles. M. oeconomus is a widely distributed fossil species in England and Wales, which also reached northern Scotland. It is a dominant element of the Crayford fauna and is numerous in the sediments of the Last Glaciation. It was still present at the end of this period (Nazeing) and dis- appeared during postglacial times. General distribution. M. oeconomus is now widely distributed in the northern parts of Europe, Asia and North America. In Europe its westernmost localities are in Holland and Germany and isolated colonies are known in Hungary and Austria. Fossil remains are common in the Late Pleistocene and Holocene layers of central Europe including France, Hungary and Switzerland. Systematic remarks. In Chaline's opinion (1972) M. ratticepoides is a synonym of M. oeconomus, which developed during the Last Glaciation, its ancestor being M. malei. This hypothesis is rather contradictory and lacks evidence, at least as far as material from the British Isles is concerned. Microtus gregalis (Pallas 1779) Narrow-skulled vole 1894 Microtus (= Arvicola) gregalis ; Newton : 197-198, pi. xi, fig. 12. 1910a Microtus anglicus Hinton : 36-37. Localities : Aveline's Hole, Somerset (11) : Davies 1921, Hinton 1921, 1924, BM(NH).. 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
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