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Mollusca Gastropoda: Eumitra récentes de la région néo-calédonienne et Charitodoron fossiles de l'Oligocène supérieur d'Aquitaine (Mitridae)
Lozouet, P. (1991). Mollusca Gastropoda: Eumitra récentes de la région néo-calédonienne et Charitodoron fossiles de l'Oligocène supérieur d'Aquitaine (Mitridae), in: Crosnier, A. et al. (Ed.) Résultats des Campagnes MUSORSTOM 7. Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie, 150: pp. 205-222
In: Crosnier, A.; Bouchet, P. (Ed.) (1991). Résultats des Campagnes MUSORSTOM 7. Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie, 150. Éditions du Muséum: Paris. ISBN 2-85653-180-6. 259 pp., more
In: Mémoires du Muséum national d'Histoire naturelle. Série A, Zoologie. Editions du Muséum: Paris. ISSN 0078-9747, more
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  • Lozouet, P.
Abstract
    The first Recent species of Eumitra are described from deep-water in the New Caledonian region: E. caledonica sp. nov. (Southern New Caledonia), E. apheles sp. nov. (Northern New Caledonia), E. imbucata sp. nov. (Coral Sea, Lansdowne-Fairway) and E. richeri sp. nov. (Coral Sea, Mellish Reef). A SEM photograph of the radula is included. Fossil Eumitra are restricted to lower Miocene of New Zealand and Miocene/Pliocene of Australia. Dispersal is advocated to explain Eumitra distribution. For the first time fossil species from Upper Oligocene of Aquitaine Basin (Southwestern France) are referred to Charitodoron. an atypical member of the Mitridae: C. taurini sp. nov. and C. cancellatus (Saubade, 1969). The three Recent Charitodoron are confined to the bathyal zone of South Africa, fossil Oligocene species have been collected from a bathyal palaeocommunity. In spite of columellar similarities, peculiar development of columellar folds (Eumitra) or edentulous columella (Charitodoron), these two genera are probably not closely related. In a paleobiogeographic discussion two key events are cited to explain the beginning of many marine disjunctions: Upper Eocene/Lower Oligocene crisis and closing of Tethys in Upper Oligocene/Lower Miocene.
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