baculite


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baculite

[′bak·yə‚līt]
(geology)
A crystallite that looks like a dark rod.
References in periodicals archive ?
The word has the same root as Bacillus (a genus of bacterium) and Baculites (a genus of extinct marine "shellfish"), which have rod-like shapes.
This particular specimen, of the genus Baculites, dates to between 70 million and 83 million years ago.
Para el Coniaciano plantea las zonas de amonitas de Barroisiceras subtuberculatum, Paralenticeras-Eulophoceras, Subprionotropis columbianus, "Gauthericeras" sp., Baculites inornatus, Hauericeras-Peroniceras; y las zonas de bivalvos de Mytiloides striatoconcentricus, Mytiloides dresdensis, Cremnoceramus rotundatus, Sergipia y Dydimotis.