Aggregation of oncolites. These spherical structures are formed from layers of cyanobacteria, or blue-green algae. This specimen dates to 144-65 million years ago during the Cretaceous and was found in Morocco. Photographed at CosmoCaixa Science Museum, Barcelona, Spain.

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Creative#:

TOP27285544

Source:

達志影像

Authorization Type:

RM

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須由TPG 完整授權

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