Polished cross-section of a fossil ammonite showing the internal chambers and dividing walls (septa) of the shell. Ammonites are extinct relatives of

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Polished cross-section of a fossil ammonite showing the internal chambers and dividing walls (septa) of the shell. Ammonites are extinct relatives of octopus and squids

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Size: 4778px × 3584px
Photo credit: © Ernest Cooper / Alamy / Afripics
License: Royalty Free
Model Released: No

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