4.1" Unusual Aegocrioceras Heteromorph Ammonite - Germany

This is an unusual, 4.1" wide Aegocrioceras spathi ammonite collected in northwestern Germany. Its spiral displays an unusual, likely pathological narrowing towards the center. It comes with an acrylic display stand.

Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells. They are more closely related to living octopuses, though their shells resemble that of nautilus species. True ammonites appeared in the fossil record about 240 million years ago during the Triassic Period. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

What an ammonite would have looked like while alive.
What an ammonite would have looked like while alive.
Aegocrioceras spathi
Near Hanover, Lower Saxony, Germany
Ammonite: 4.1" wide
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