10.5" Ammonite (Promicroceras) Mass Mortality - Lyme Regis

This is an impressive, 10.5" wide, mass-mortality plate of Promicroceras ammonites from Lyme Regis, England. There are well over one hundred ammonites on this plate which have been replaced with agate. Many, many hours went into preparing this piece to exposed all of the ammonites in the hard limestone. A truly spectacular piece.

Comes with a 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.
Promicroceras planicosta
Lyme Regis, Dorset, England
Lower Lias, Obtusum Zone
Rock 10.5x9.5", Largest ammonite 1"
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