Keywords: Figure 551 - Diagram of a Mollusc (altered from Lankester).jpg en A diagram of a hypothetical ancestral mollusc by Nicholson and Lydekker altered from an earlier diagram by Lankester M mouth; A anus; L liver; F foot; SH shell attached to the mantle; H heart; PE pericardium; N kidney nephridium opening internally into the pericardium and externally near the anus K BR gill branchia ; CG cerebral ganglion; PG pleural ganglion; FG pedal ganglion; VG visceral ganglion; VN visceral nerve cord 1889 A Manual of Paleontology Vol I P 671 published 1889 Henry Nicholson and Richard Lydekker other versions PD-old-70-1923 Uploaded with UploadWizard Mollusca anatomy Language-neutral diagrams |