Segmentina nitida
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Segmentina nitida, the shining ram's-horn snail, is a species of small, air-breathing, freshwater snail. Taxonomically, the S. nitida is an aquatic gastropod mollusc or micromollusc in the family Plan
Segmentina nitida
Mollusca
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Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks. 86,600 extant species of molluscs are recognized, making it the second-largest animal phylum
Segmentina nitida
…nitida, the shining ram's-horn snail, is a species of small, air-breathing, freshwater snail. Taxonomically, the S. nitida is an aquatic gastropod mollusc or micromollusc in the family Planorbidae, commonly called the ramshorn snails. The shell of this species is sinistral in coiling and almost planispiral…
Cornu aspersum (formerly Helix aspersa)—a common land snail
Shell of Marisa cornuarietis, a freshwater snail
Fossilized ammonite displayed at the National Museum of the Philippines
Diversity and variability of shells of molluscs on display