Cryptospore
Cryptospores are microscopic fossilized spores produced by embryophytes (land plants). They first appear in the fossil record during the middle of the Cambrian period, as the oldest fossil evidence for the colonization of land by plants.
Cryptospores are microscopic fossilized spores produced by embryophytes (land plants). They first appear in the fossil record during the middle of the Cambrian period, as the oldest fossil evidence for the colonization of land by plants.
Cryptospores are microscopic fossilized spores produced by embryophytes (land plants). They first appear in the fossil record during the middle of the Cambrian period, as the oldest fossil evidence for the colonization of land by plants.
Source: Wikipedia "Cryptospore" · CC BY-SA 4.0
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