Memorial stone. The tombstone-like appearance of this rock is fitting, as it is made from mass ammonite grave. These extinct marine animals are distant relatives of living squids and nautiloids. Ammonites, like squids, probably propelled themselves using muscular constrictions to expel jets of water while air chambers in these complex shells controlled their buoyancy.

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Memorial stone. The tombstone-like appearance of this rock is fitting, as it is made from mass ammonite grave. These extinct marine animals are distant relatives of living squids and nautiloids. Ammonites, like squids, probably propelled themselves using muscular constrictions to expel jets of water while air chambers in these complex shells controlled their buoyancy.

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Size: 4500px × 3928px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: air, ammonite, ammonites, animals, appearance, archival, archive, buoyancy., chambers, complex, constrictions, controlled, distant, expel, extinct, fitting, fossil, grave., historical, history, jets, living, marine, mass, memorial, muscular, nautiloids., propelled, relatives, rock, shell, shells, squids, stone, stone., tombstone-, water