Views on the Significance of Torsion in Gastropods: · 1. There are many pelagic larvae of lamellidens which are not twisted but still survive in pelagic larval life. · 2​.
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torsion in molluscs pdf
by JDF Gilchrist · 1895 · Cited by 2 — 1894-95.] Dr Gilchrist on Torsion of the Molluscan Body. 357 ... There is strong evidence for supposing that the Mollusca are derived from a .... on foot (a process known as torsion), so mantle cavity lies anteriorly or on right side (rather than posteriorly as in other molluscs), and gut and nervous system ... 939c2ea5af