Hypseloconids are almost exclusively associated with digitate or small domal stromatolites where they are frequently found in clusters. |
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At Taskent the upper layer of oolite is more resistant but sharply truncated beneath stromatolites of the overlying Gevne Formation. |
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At first sight, the Shark Bay stromatolites look like rocks lying in an orderly fashion in the intertidal zone. |
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The formation has yielded numerous fossils of stromatolites in addition to microfossils. |
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They may be calcareous sponges, cyanobacteria, or stromatolites. |
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Distribution of calcareous algae, oncolites and stromatolites in the Wenlock-Ludlow boundary beds in Estonia. |
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These laminations can accrete over time, resulting in the banded pattern common to stromatolites. |
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Layered spherical growth structures termed oncolites are similar to stromatolites and are also known from the fossil record. |
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The domal morphology of biological stromatolites is the result of the vertical growth necessary for the continued infiltration of sunlight to the organisms for photosynthesis. |
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Most modern and ancient stromatolites occur in carbonate sediments and sedimentary rocks, but they can form by trapping and binding of any sediment particles. |
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In their research, each time a large die off occurred, they found a spike in the number of fossil algae mats called stromatolites strewn around the planet. |
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Stromatolites were built by photosynthesizing organisms occupying shallow-water environments within the photic zone. |
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Stromatolites are the predominant features of carbonate rocks formed in Precambrian oceans. |
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Stromatolites and fenestral fabric in Early Proterozoic Huronian Supergroup, Ontario. |
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