pseudumbilicus

pseudumbilicus
n. [Gr. pseudos, false; L. umbilicus, navel]
(MOLLUSCA: Gastropoda)
A depression or cavity in the shell base only in the last whorl; a false umbilicus.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • false umbilicus — (MOLLUSCA: Gastropoda) A cavity or depression in the base of the last whorl of the shell; a pseudumbilicus …   Dictionary of invertebrate zoology

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