A fossil cephalopod layer related to the nautilus there are numerous genera and types and all are extinct the standard forms having existed only in Mesozoic age if they had been extremely numerous They vary from the nautili in obtaining the margins of septa quite definitely lobed or plaited while the siphuncle dorsal also known as serpent stone serpent rock and cornu Ammonis
- one of the coiled chambered fossil shells of extinct mollusks
- A fossil cephalopod shell about the nautilus. There tend to be many genera and species, and all sorts of tend to be extinct, the standard forms having existed only into the Mesozoic age, if they had been exceedingly many. They change from the nautili in getting the margins associated with septa very much lobed or plaited, additionally the siphuncle dorsal. Also referred to as serpent stone, serpent rock, and cornu Ammonis.
"cephalopod mollusk," 1758, from French (Breyn, 1732), "better set up" [Century Dictionary] by French zoologist Jean Guillaume Brugui
(n.) A fossil cephalopod layer linked to the nautilus. There are many genera and types, and all are extinct, the standard types having been around just in Mesozoic age, when they were exceedingly numerous. They differ from the nautili in getting the margins associated with the septa definitely lobed or plaited, in addition to siphuncle dorsal. Also referred to as serpent stone, serpent stone, and cornu Ammonis.
Apart from the Ammonite war, our sources are confined to a mere summary (viii.), which includes even the Amalekites (viii.