from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of numerous species of small, conical fossil shells found in Paleozoic rocks.
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of numerous species of small, conical fossil shells found in Paleozoic rocks. They are supposed to be pteropods.
from The Century Dictionary and Cyclopedia
- n. A fossil pteropod of the family Tentaculitidæ.
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