Land Snails from the Early Miocene Legetet Formation, Koru, Kenya

Beschreibung

Introduction 7 Systematic descriptions 12 Family Pupillidae 12 Genus Afripupa Pilsbry & Cooke, 1920 12 Species Afripupa kenyensis sp. nov. 12 Genus Lauria Gray 1840 12 Species Lauria indet. 12 Family Chondrinidae 13 Genus Gastrocopta Wollaston, 1878 13 Species Gastrocopta indet. 13 Family Cerastidae 14 Genus Conulinus Von Martens, 1895 14 Species Conulinus verdcourti sp. nov. 14 Genus Edouardia Gude, 1914 15 Species Edouardia cf. alycaeoides Verdcourt, 1957 15 Species Edouardia mfwanganensis Verdcourt, 1963a 16 Family Ferussaciidae 17 Genus Micropeas Connolly, 1923 18 Species Micropeas brooksi sp. nov. 18 Micropeas cf. euphues Connolly, 1923 19 Genus Cecilioides Férussac, 1814 19 Species Cecilioides senutae sp. nov. 19 Family Subulinidae 20 Genus Krapfiella Preston, 1911 21 Species Krapfiella angusta Verdcourt, 1963b 21 Genus Kenyaella gen. nov. 23 Species Kenyaella koruensis sp. nov. 23 Genus Subulona Von Martens, 1889 25 Species Subulona mioegregia sp. nov. 25 Genus Oreohomorus Pilsbry, 1919 26 Species Oreohomorus sp. 26 Genus Subuliniscus Pilsbry, 1919 26 Species Subuliniscus sp. indet. 26 Genus Pseudopeas Putzeys, 1899 28 Species Pseudopeas koruensis sp. nov. 28 Genus Curvella Chaper, 1885 28 Species Curvella procampyla sp. nov. 28 Species Curvella cheptumoae sp. nov. 29 Genus Opeas Albers, 1850 29 Species Opeas gommeryi sp. nov. 29 Family Achatinidae 30 Genus Tholachatina Bequaert, 1950 30 Species Tholachatina leakeyi (Crowley & Pain, 1963) 30 Genus Burtoa Bourguignat, 1889 32 Species Burtoa nilotica verdcourti Crowley & Pain, 1959 32 Family Streptaxidae 33 Genus Artemonopsis Germain, 1908 34 Species Artemonopsis miocenica (Verdcourt, 1963a) 34 Genus Gonaxis Taylor, 1877 35 Species Gonaxis miocraveni sp. nov. 35 Genus Pseudogonaxis Thiele, 1932 36 Species Pseudogonaxis protocavalii (Verdcourt, 1963a) 36 Species Pseudogonaxis legetetensis nov. 37 Genus Edentulina Pfeiffer, 1856 39 Species Edentulina rusingensis Verdcourt, 1963a 39 Genus Marconia Bourguignat, 1889 39 Species Marconia elegans sp. nov. 39 Genus Orthogibbus Germain, 1919 41 Species Orthogibbus superbus sp. nov. 41 Genus Streptostele Dohrn, 1866 42 Species Streptostele indet. 42 Genus Primigulella Pilsbry, 1919 42 Species Primigulella miocenica Verdcourt, 1963a 42 Species Primigulella koruensis nov. 42 Genus Gulella Pfeiffer, 1856 44 Species Gulella moja sp. nov. 44 Species Gulella mbili sp. nov. 46 Species Gulella tatu sp. nov. 46 Species Gulella nne sp. nov. 47 Species Gulella tano sp. nov. 48 Species Gulella sita sp. nov. 48 Genus Silvigulella Pilsbry, 1919 50 Species Silvigulella palaeoshandae sp. nov. 50 Genus Haplonepion Pilsbry, 1919 50 Species Haplonepion naggsi sp. nov. 50 Family Charopidae 51 Genus Trachycystis Pilsbry, 1892 52 Species Trachycystis chancogneae sp. nov. 52 Species Trachycystis palaeokempi sp. nov. 53 Species Trachycystis legetetana sp. nov. 53 Family Urocyclidae 54 Genus Koruella gen. nov. 54 Species Koruella magnifica sp. nov. 54 Genus Crenatinanina Germain, 1920 56 Species Crenatinanina palaeokempi sp. nov. 56 Genus Trochonanina Mousson, 1869 57 Species Trochonanina mioelgonensis sp. nov. 57 Genus Thapsia Albers, 1860 58 Species Thapsia senutae sp. nov. 58 Family Vitrinidae 60 Genus Calidivitrina Pilsbry, 1919 60 Species Calidivitrina vanbruggeni sp. nov. 60 Family Halolimnohelicidae 61 Genus Mikenoella Preston, 1914 61 Species Mikenoella palahena sp. nov. 61 Genus Elgonella Preston, 1914 62 Species Elgonella aequatorialis sp. nov. 62 Summary and conclusions 63 Acknowledgements 66 References 67

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Martin Pickford

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