Assertion: gastropod's shell | /r/HasAspect | long siphonal canal
Facets:
value: extremely
type: DEGREE
Source sentences:
text: The whorls usually have a strong keel and the shell has a long siphonal canal.
text: The shell has a long siphonal canal and shows three varices per whorl.
text: The shell has a long siphonal canal.
text: For a gastropod whose shell has an exceptionally long siphonal canal, see Venus comb murex.
text: The shell of the Venus comb murex Murex pecten has an extremely long siphonal canal.