protoconch

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English[edit]

English Wikipedia has an article on:

protoconch

Etymology[edit]

proto- +‎ conch

Noun[edit]

protoconch (plural protoconches or protoconchs)

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

Coordinate terms[edit]

teleoconch

References[edit]

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

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