Fossil sponge Chaetetes among the stones on the bank of the stream. Kaluga region, Russia

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Photo credit: © Photochur / Alamy / Afripics
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Keywords: background, chaetetes, close, closeup, collecting, day, extinct, find, fossil, marine, natural, nature, outdoor, paleontology, petrified, radiant, river, rock, rockhounding, search, shore, sponge, stone, stones, stream, texture