Dictionary

deuteroconch en · NOUN

Etymology

From deutero- + conch.

Meanings

1. The second chamber of ammonites and other cephalopods
   • A microspheric nucleoconch does not have an obvious deuteroconch, and is followed by a spiral nepionic stage, no matter what the adult chamber arrangement may be. 1954, Alan Hilder Smout, Lower Tertiary Foraminifera of the Qatar Peninsula, British Museum (Natural History), page 25:

Forms