Ammonite marble
Asteroceras (large shells) and Promicroceras (small shells) ammonites, seen here in the polished surface of a specimen of marble originating from the Lower Lias, near Yeovil, Somerset.
Size: 3036px × 3841px
Photo credit: © Natural History Museum, London / Alamy / Afripics
License: Licensed
Model Released: No
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