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en.wikipedia.org/wiki/Stromatolite

Stromatolites are layered bio-chemical accretionary structures formed in shallow water by the trapping, binding and cementation of sedimentary grains by biofilms (microbial mats) of microorganisms, especially cyanobacteria. They exhibit a variety of forms and structures, or morphologies, including conical, stratiform, branching, domal, and columnar types.

www.dictionary.com/browse/stromatolite

Stromatolite definition, a laminated calcareous fossil structure built by marine algae and having a rounded or columnar form. See more. Stromatolite | Definition of Stromatolite at Dictionary.com

www.merriam-webster.com/dictionary/stromatolite

Stromatolite definition is - a laminated usually mounded sedimentary fossil formed from layers of cyanobacteria, calcium carbonate, and trapped sediment. a laminated usually mounded sedimentary fossil formed from layers of cyanobacteria, calcium carbonate, and trapped sediment… See the full definition.

www.thefreedictionary.com/stromatolite

Define stromatolite. stromatolite synonyms, stromatolite pronunciation, stromatolite translation, English dictionary definition of stromatolite. n. A usually rounded or columnar sedimentary structure consisting of alternating layers of carbonate or silicate sediment and fossilized microbial mats,...

medical-dictionary.thefreedictionary.com/Stromatolites

stromatolite (strō-măt′l-īt′) n. A usually rounded or columnar sedimentary structure consisting of alternating layers of carbonate or silicate sediment and fossilized microbial mats, produced over geologic time by the trapping, binding, or precipitating of minerals by groups of microorganisms, primarily cyanobacteria. stro·mat′o·lit′ic ...

www.yourdictionary.com/stromatolite

stromatolite definition: a laminated, sedimentary rock structure formed primarily in Precambrian shallow pools by mats of sticky, blue-green algae which trapped layers of silt, esp. of calcium carbonate: these wavy or round formations serve as evidence for...

www.collinsdictionary.com/dictionary/english/stromatolite

Stromatolite definition: a rocky mass consisting of layers of calcareous material and sediment formed by the... | Meaning, pronunciation, translations and examples

www.britannica.com/science/stromatolite

Stromatolite: Stromatolite, layered deposit, mainly of limestone, formed by the growth of blue-green algae (primitive one-celled organisms). These structures are usually characterized by thin, alternating light and dark layers that may be flat, hummocky, or dome-shaped. The alternating layers are largely

www.fossilmuseum.net/Tree_of_Life/Stromatolites.htm

Stromatolites are not only Earth's oldest of fossils, but are intriguing in that they are our singular visual portal (except for phylogenetic determination of conserved nucleic acid sequences and some subtle molecular fossils) into deep time on earth, the emergence of life, and the evolving of the beautiful forms of life of modern time.

www.worldatlas.com/articles/what-is-a-stromatolite.html

Stromatolites are layered forms of sedimentary rocks that are created by cyanobacteria. These sedimentary rocks occur as mounds, columns, and sheets, and are characterized by their distinct laminate structures. Coined in 1908, the name stromatolite is derived from the Greek words stroma, which means "layer," and Lithos, which means "rock."