Results 231 to 240 of about 68,902 (263)

What Do We Know About Non-Native, Invasive, and Transplanted Aquatic Mollusks in South America? [PDF]

Biology (Basel)
Darrigran G, Belz C, Carranza A, Collado GA, Correoso M, Fabres AA, Gutiérrez Gregoric DE, Lodeiros C, Pastorino G, Penchaszadeh PE, Salvador RB, Santos S, Thiengo S, Damborenea C.   +13 more
europepmc   +1 more source

Mollusca. Gastropoda (Schnecken) [PDF]

, 1932
Die Klasse der Schnecken ist definiert als eine Gruppe von Tieren, die ohne Ausnahme grundsatzlich asymmetrisch gebaut sind und zumindest noch Reste dieser Asymmetrie in ihrem Korper aufweisen. Die Frage, wie, d. h. durch welche Vorgange die typische Schneckenasymmetrie entstanden ist, beantworten alle Autoren ubereinstimmend; die Meinungen differieren
openaire   +1 more source

XVII. MOLLUSCA: GASTROPODA [PDF]

Transactions of the Linnean Society of London: 3rd Series, 1955
SUMMARY The species listed below have been discussed and described on the foregoing pages. All of them were collected by the Percy Sladen Expedition in the lakes and rivers of the High Andes, most of them in the basin of Lake Titicaca: Thus five new genera, fourteen new species, and one new variety were contained in the material collected by ...
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Conidae (Mollusca, Gastropoda) of Lakshadweep, India 

Zootaxa, 2018
Lakshadweep, the northernmost region of the Chagos-Maldives-Lakshadweep group of islands located southwest of the Malabar coast of India in the Arabian Sea, is the only chain of coral atolls in India. This paper documents the diversity of the molluscan family Conidae from the seas around all ten inhabited islands of Lakshadweep.
Ravinesh, Raveendhiran, Kumar, Appukuttannair Biju, Kohn, Alan J.   +2 more
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XVIII. THE ANATOMY OF THE GASTROPODA*

Transactions of the Linnean Society of London: 3rd Series, 1955
SUMMARY Tropicorbis canonicus differs, particularly in the prostate, from the remaining Tropicorbis species which have been anatomically studied, and seems to form a connecting link between these forms and Australorbis. Taphius also represents a form intermediate between Tropicorbis and Australorbis.
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The systematic position of the Euomphalidae (Gastropoda)

Senckenbergiana lethaea, 1998
The core group of Euomphalidae with the generaEuomphalus, Straparollus, Serpulospira, Phymatifer, Schizostoma, Nodeuomphalus n. g. (Devonian to Permian) are characterized by a cyrtoconic, openly coiled, planispiral protoconch. This character distinguishes them from members of the four extant subclasses of the Gastropoda (Archaeogastropoda, Neritimorpha,
Jiřý Frýda, Klaus Bandel
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