Yanina t a (2 risultati)
A late Pleistocene gastropod fauna from the northern Caspian Sea with implications for Pontocaspian gastropod taxonomy
Neubauer, T. A., van de Velde, S., Yanina, T. & Wesselingh, F. P.
Da: ConchBooks, Harxheim, GermaniaConchBooks
Contatta il venditoreVenditore con 4 stelleCondizione: Usato
EUR 20,59
EUR 24,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloThe present paper details a very diverse non-marine gastropod fauna retrieved from Caspian Pleistocene deposits along the Volga River north of Astrakhan (Russia). During time of deposition (early Late Pleistocene, late Khazarian regional substage), the area was situated in shallow water of the greatly expanded Caspian Sea. The f…auna contains 24 species, of which 16 are endemic to the Pontocaspian region and 15 to the Caspian Sea. The majority of the species (13) belongs to the Pyrgulinae (Hydrobiidae), a group famous for its huge morphological variability in the Pontocaspian region. The phenotypic diversity has led to an inflation of genus and species names in the literature. New concepts are proposed for many of the genera and species found in the present material, with implications for the systematics and taxonomy of the entire Pontocaspian gastropod fauna. Laevicaspia vinarskii sp. n. is described as a new species. This contribution is considered a first step in revising the Pontocaspian gastropod fauna. New taxon: Laevicaspia vinarskii n. sp. 61 pp., 17 figs, gr. 8.
Altre immaginiAtlas and Catalogue of the Living Mollusks of the Aral and Caspian Seas
Vinarski, M. V., Kijashko, P. V., Andreeva, S. I., Sitnikova, T. Ya. & Yanina, T. A.
- Brossura
Da: ConchBooks, Harxheim, GermaniaConchBooks
Contatta il venditoreVenditore con 4 stelleCondizione: Usato
EUR 55,20
EUR 24,00 spedizioneSpedito da Germania a U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloThe Aral and Caspian Seas belong to the group of the World's largest brackish water basins that are characterized by a long geological history and unique biota, including a rich and diverse fauna of mollusks (bivalves and gastropods). Though the history of scientific exploration of the Aralo-Caspian malacofauna can be traced bac…k to the end of the 18th century, there is still a lack of a comprehensive and illustrated survey of Mollusca of these two sea basins. The book provides an annotated inventory of the recent Bivalvia and Gastropoda of the Aral and Caspian Seas, with their synonymy, notes on ecology and distribution, and images of shells (including numerous images of type specimens - holotypes, lectotypes, syntypes, etc.). An extensive overview of the physical geographical conditions of the two basins as well as their geological history is provided alongside with an outline of the historical development of their malacofaunas. The systematic part contains a description of the fauna, represented in the Aral Sea by two species of Gastropoda and seven species of Bivalvia, and in the Caspian Sea by 33-34 species of Bivalvia and 63 species of Gastropoda. These estimates, however, are of provisional character only, since the high level of taxonomic uncertainty makes it impossible to determine exactly the actual number of living species. A special discussion is devoted to the drastic degradation of the Aralo-Caspian malacofauna in the former century, which was caused primarily by the anthropogenic destruction of the aquatic environment and inflow of alien molluscan species. 124 pp., 16 color plates, 38 text figs, 5 tabs, br. 4.
