Physa sentence example

physa
  • Triforis, Physa, Clausilia are examples of sinistral Gastropods, but reversal also occurs as an individual variation among forms normally dextral.
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  • Physa is smaller than Limnaeus and has the upper part of the spire much shorter.
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  • Its body is divisible into three portions, an upper capitulum bearing the mouth and tentacles, a median scapus covered by a friable cuticle, and a terminal physa which is rounded.
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