Burridge janssen (2 resultados)
Librería: ConchBooks, Harxheim, AlemaniaConchBooks
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EUR 5,75
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Shelled pteropods (Gastropoda, Thecosomata, Euthecosomata) are a group of holoplanktonic gastropods that occur predominantly in the surface layers of the world's oceans. Accurate species identifications are essential for tracking changes in species assemblages of planktonic gastropods, because different species are expected to h…ave different sensitivities to ocean changes. The genus Cuvierina has a worldwide warm water distribution pattern between ~36°N and ~39°S. Based on an integrative taxonomic approach combining morphometric, genetic, and biogeographic information, the two subgenera of Cuvierina, Cuvierina s. str. and Urceolarica, are rejected. A new species is introduced: Cuvierina tsudai sp. n., which has to date been considered the same species as Cuvierina pacifica. Cuvierina tsudai sp. n. is endemic to the Pacific Ocean and is characterised by a shell height of 7.2-8.0 mm, a moderately cylindrical shell shape, the absence of micro-ornamentation and a triangular aperture. Cuvierina pacifica is restricted to the centre of the oligotrophic southern Pacific gyre, has a shell height of 6.6-8.5 mm, a more cylindrical shell shape, no micro-ornamentation and a less triangular aperture than C. tsudai sp. n. New taxon: Cuvierina tsudai n. sp. 12 pp., 3 figs, gr. 8.
History of the Clio pyramidata-complex (Mollusca, Gastropoda, Euthecosomata, Cliidae) in the Atlantic Ocean, restoring its original concept. In 4to, offp., pp. 20 with 26 figs. Offprint from Basteria, 82(4-6)
Janssen A.W., Burridge A.K., Mekkes L. & Peijnenburg K.T.C.,
Librería: Riccardo Giannuzzi Savelli, Palermo, PA, ItaliaRiccardo Giannuzzi Savelli
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