AMMONITES
Noun
Ammonites
plural of Ammonite
Noun
ammonites
plural of ammonite
Source: Wiktionary
AMMONITE
Am"mon*ite, n. Etym: [L. cornu Ammonis born of Ammon; L. Ammon, Gr.
Amun.] (Paleon.)
Definition: A fossil cephalopod shell related to the nautilus. There are
many genera and species, and all are extinct, the typical forms
having existed only in the Mesozoic age, when they were exceedingly
numerous. They differ from the nautili in having the margins of the
septa very much lobed or plaited, and the siphuncle dorsal. Also
called serpent stone, snake stone, and cornu Ammonis.
Source: Webster’s Unabridged Dictionary 1913 Edition