stromatolite
noun
stro·mat·o·lite
| \ strĆ-Ëma-tÉ-ËlÄ«t
\
\
Definition of stromatolite
: a laminated usually mounded sedimentary fossil formed from layers of cyanobacteria, calcium carbonate, and trapped sediment
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Other Words from stromatolite
stromatolitic
\ strĆ-Ëma-tÉ-Ëli-tik
\
adjective
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adjective
Examples of stromatolite in a Sentence
Recent Examples on the Web
Elsewhere on Earth, stromatolites provide proof of bacterial communities as old as 3.5 billion years. — Bridget Alex, Discover Magazine, "Are the Oldest Fossils Real - Or Just Rocks?," 7 May 2019 In an ideal world, the outline of an ancient stromatolite would pop out in vivid contrast to a background of rock. — Quanta Magazine, "Worldâs Oldest Fossils Now Appear to Be Squished Rocks," 22 Oct. 2018 This formed features that resemble stromatolites, but only when viewed head on. — Bridget Alex, Discover Magazine, "Are the Oldest Fossils Real - Or Just Rocks?," 7 May 2019 The controversy concerns stromatolites, which are ancient ruins of microbial activity preserved in rock. — Quanta Magazine, "Worldâs Oldest Fossils Now Appear to Be Squished Rocks," 22 Oct. 2018 Their first observation is the simplestâthere's a problem with the shape of the purported stromatolites. — Scott K. Johnson, Ars Technica, "New study argues against some of the oldest evidence for life," 18 Oct. 2018 Some of Earth's oldest fossils come in the form of stromatolites: layered structures created by aquatic colonies of photosynthetic microbes called cyanobacteria. — National Geographic, "6 Amazing Structures Built by Surprising Creatures," 7 May 2018 According to a 2016 study in Scientific Reports, stromatolites dominated Earth's fossil record for four-fifths of our planet's history, with some of the oldest stromatolites yet found ranging from 3.48 to 3.7 billion years old. — National Geographic, "6 Amazing Structures Built by Surprising Creatures," 7 May 2018 They are called stromatolites, a microbial mat formed in shallow water by trapping and binding sedimentary grain by biofilms. — Brian E. Clark, Milwaukee Journal Sentinel, "A mastodon and a meteor older than Earth are highlights of the UW Geology Museum," 9 Mar. 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'stromatolite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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