lituiticone
English
This Lituites fossil is a lituiticone.
Etymology
From or related to the genus name Lituites.
Noun
lituiticone (plural lituiticones)
- (malacology) A conch or shell which completes few whorls in the beginning, and thereafter becomes a straight cone.
- 1964, New Mexico. Bureau of Mines and Mineral Resources, Memoir:
- An endogastric cyrtocone, the basal part sectioned showing the position of the siphuncle P.
A lituiticone. All side views, except M, have the shell oriented with the venter to the left a a earlier whorls.
- 1986, Paolo Arduini; Giorgio Teruzzi, Simon & Schuster's Guide to Fossils, Simon & Schuster:
- Description A nautiloid with a shell only partially coiled in a flat spiral (lituiticone) : the coiling appears in the first whorls, which may be only slightly touching, and the shell subsequently develops in a straight line […]
- 2020 March 10, Winston Frank Ponder; David R. Lindberg; Juliet Mary Ponder, Biology and Evolution of the Mollusca, Volume 2, CRC Press, →ISBN:
- […] The shells are slender orthocones or rapidly expanding lituiticones, either weakly cyrtoconic or with the apical part spirally […]
Related terms
- lituiticonic