Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 3 of 3 for “"Ancylidae"”.
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Mollusks from Wisconsinan (Pleistocene) ice-contact sediments of the Missouri Coteau in central North Dakota
… Hydrobiidae, Physidae, Lymnaeidae, Planorbidae, Ancylidae, Succineidae, and Pupillidae. ____ shells have provided material for five radiocarbon dates in the Missouri Coteau district which indicate the melting of the stagnant ice may have required 2,100 years.</p> <p>The fossil mollusks, as now …
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Comunidade de moluscos bentônicos na área de abrangência da Usina Hidrelétrica de Dona Francisca, Rio Jacuí, Rio Grande do Sul, Brasil : fase de pré e pós-enchimento do reservatório
… 1868; Lymnaeidae – Lymnaea columella Say, 1817; Ancylidae – Gundlachia concentrica (Orbigny, 1835); e Physidae – Stenophysa marmorata (Guilding, 1938). Para Bivalvia: Corbiculidae – Corbicula fluminea (Müller, 1774); Mycetopodidae – Anodontites iheringi (Clessin, 1882), Anodontites lucidus …
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Subsídios para o conhecimento de Laevapex diaphanus (Haldeman, 1841) (Mollusca: Basommatophora: Ancylidade)
This study deals mainly with the anatomy fo Laevapex diaphanus (Haldeman, 1841), in comparison with Laevapex fuscus (Adams, 1841). L. diaphanus maybe distinguished from L. fuscus by the asmymmetric central tooth in the radula, smaller seminal vesicle, prostate and ovotestis , less pronounced mantle …