This creature, known as an ammonite, is an ancient relative of the modern day octopus, squid, and cuttlefish. Although this specimen is 2 feet in diameter and rather large, some fossil ammonites have been found that are larger than 8 feet across. This ammonite was found in England among rocks that date to about 150 million years ago! Ammonites became extinct more than 65 million years ago.
The Children's Museum of Indianapolis
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Paleontology -- Jurassic
Paleontology -- Cretaceous
Paleontology -- Mesozoic
Marine animals, Fossil
Further information on this record can be found at its source.