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English Fox - English Dictionary
Meaning of
protoconch
in English
protoconch
us
/ˌproʊtoʊˈkɑnʧ/
uk
/ˌpɹəʊtəʊˈkɒntʃ/
#uncommon
Definitions
Noun
embryonic
shell
of
cephalopods
(
ammonites
);
initial
chamber
The
protoconch
is
a
critical
part
of
the
ammonite's
early
development
.
first
chamber
of
ammonites
and
related
species
The
fossilized
protoconch
of
the
ammonite
was
clearly
visible
in
the
rock
.
