- a bedded, blanketlike sedimentary deposit of organic origin built by marine organisms and including shell beds, flat reefs, and corals.
Origin of biostrome
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a rock layer consisting of a deposit of organic material, such as fossils
C20: from bio- + Greek strōma covering
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