This is a preview. Log in through your library . Abstract Pedinopomus garrisonensis n.g., n.sp., a freshwater gastropod is described from the Paleocene Tongue River Formation of south-central North ...

Peritrophic membranes (PMs) are acellular layered structures secreted around ingested materials by the gut epithelium. Most studies on PMs have focused on those of insects and crustaceans due to their ...

Tsukuba, Japan—Mollusks exhibit diverse shell morphologies, such as those seen in bivalves (e.g., clams) and gastropods (e.g., snails). Understanding the mechanisms underlying shell formation requires ...

A CORRESPONDENT has raised the question as to whether there is any explanation for the fact that spiral shells of present-day marine gastropods wind in the opposite direction to similar shells found ...

Hermit crabs have an intimate relationship with gastropod shells and show numerous activities by which they locate, select, and change shells in different contexts. They gather information about new ...