archaeogastropod
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archaeogastropod — ar·chaeo·gastropod … English syllables
gastropod — /gas treuh pod /, n. 1. any mollusk of the class Gastropoda, comprising the snails, whelks, slugs, etc. adj. 2. Also, gastropodous /ga strop euh deuhs/. belonging or pertaining to the gastropods. [1820 30; < NL Gast(e)ropoda a class of mollusks.… … Universalium
Oesophageal pouch — The oesophageal pouches (also known as sugar glands)[1] are a pair of pouches connected to the oesophagus of all molluscs, and represent a synapomorphy of the phylum.[2] Contents 1 Morphology 2 Function … Wikipedia