The septa, or gas filled chambers that controlled the buoyancy of this extinct Ammonite during it's life 100 million years ago


The septa, or gas filled chambers that controlled the buoyancy of this extinct Ammonite during it's life 100 million years ago have been filled with quartz crystals during fossilisation


Size: 6000px × 4000px
Location: Madagascar
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

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