By: magic-gigapans
Image: Jay Kaufman, University of Maryland
License: Creative Commons Non Commercial ⧉

Uploaded: 11 May 2020
Last Updated: 20 May 2020

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Large limestone block at the University in Corumba, Brazil with thousands of Cloudina fragments. Cloudina was among the earliest biomineralized organisms with a cone-in-cone structure, and is found worldwide in late Ediacaran (ca. 545 Ma) shallow marine sedimentary rocks.