Mid 19th century; earliest use found in William Buckland (1784–1856), geologist and dean of Westminster. From rhyncho- + -lite, after French rhyncolite.
Definition of rhyncholite in US English:
rhyncholite
nounˈrɪŋkəlʌɪt
A fossilized jaw (beak) of a cephalopod mollusc.
Origin
Mid 19th century; earliest use found in William Buckland (1784–1856), geologist and dean of Westminster. From rhyncho- + -lite, after French rhyncolite.