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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

Blog post recommendation

Wooster’s Fossils of the Week: A stromatoporoid-stromatolite combination (Upper Silurian of Saaremaa Island, Silurian)

There are two common fossil types that begin with “strom” and look roughly alike to the untrained eye. One is the stromatoporoid, which is a calcareous sponge, and the other is the stromatolite, which is a layered structure produced by photosynthetic bacteria. I hadn’t seen them together until our expedition to the Silurian of Estonia [...]

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