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.