Meaning of ammonitella | Babel Free

Definitions

The initial part of a spiral shell, originating from a central chamber, in ammonoid molluscs

Examples

“The embryonic stage, consisting of a small ellipsoid protoconch and ammonitella, ends at about 0.6 mm.”

“Sure, ammonoid shells as a whole got progressively more coiled over the Devonian. But so did the tiniest part of each ammonoid shell, the ammonitella.”

CEFR level