Fossilized impression of sea urchin in chert

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Size: 5616px × 3744px
Photo credit: © Henri Koskinen / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: ancient, animal, chert, echinoderm, echinoderms, evolution, external, extinct, extinction, flint, fossil, fossilized, fossils, geology, impression, limestone, marine, mold, mould, nodule, paleontology, quartz, sea, urchin