protoconch

English

Etymology

From proto- +‎ conch.

Noun

protoconch (plural protoconches or protoconchs)

1. (zoology) The embryonic shell, or initial chamber, of ammonites and other cephalopods

Coordinate terms

• teleoconch

References

• “protoconch”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.