Word Study
ammonite
CIDE DICTIONARY
ammonite, n. [L. cornu Ammonis born of Ammon; L. Ammon, Gr. an appellation of Jupiter, as represented with the horns of a ram. It was originally the name of an. Egyptian god, Amun.].
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 . [1913 Webster]
OXFORD DICTIONARY
ammonite, n. any extinct cephalopod mollusc of the order Ammonoidea, with a flat coiled spiral shell found as a fossil.
Etymology
mod.L ammonites, after med.L cornu Ammonis, = L Ammonis cornu (Pliny), horn of (Jupiter) Ammon
ROGET THESAURUS
ammonite
Convolution
N convolution, winding, convolution, involution, circumvolution, wave, undulation, tortuosity, anfractuosity, sinuosity, sinuation, meandering, circuit, circumbendibus, twist, twirl, windings and turnings, ambages, torsion, inosculation, reticulation, rivulation, roughness, coil, roll, curl, buckle, spiral, helix, corkscrew, worm, volute, rundle, tendril, scollop, scallop, escalop, kink, ammonite, snakestone, serpent, eel, maze, labyrinth, knot, convoluted, winding, twisted, tortile, tortive, wavy, undated, undulatory, circling, snaky, snake-like, serpentine, serpent, anguill, vermiform, vermicular, mazy, tortuous, sinuous, flexuous, anfractuous, reclivate, rivulose, scolecoid, sigmoid, sigmoidal, spiriferous, spiroid, involved, intricate, complicated, perplexed, labyrinth, labyrinthic, labyrinthian, labyrinthine, peristaltic, daedalian, kinky, knotted, wreathy, frizzly, crepe, buckled, raveled, spiral, coiled, helical, cochleate, cochleous, screw-shaped, turbinated, turbiniform, in and out, round and round, a can of worms, Gordian knot.For further exploring for "ammonite" in Webster Dictionary Online