4.3" Jurassic Ammonite (Hildoceras) Fossil - England

 
This is a large, 4.3" wide Hildoceras ammonite from Whitby, England. It was found within a large concretion which was broken open to reveal the fossil. The bottom edge of the concretion has been cut flat, allowing for the specimen to stand up nicely on a flat surface.

Ammonites were predatory mollusks that resembled a squid with a shell. These cephalopods had eyes, tentacles, and spiral shells. They are more closely related to a living octopus, though the shells resemble that of a nautilus. True ammonites appeared in the fossil record about 240 million years ago. The last lineages disappeared 65 million years ago at the end of the Cretaceous.



DETAILS
SPECIES
Hildoceras
LOCATION
Port Mulgrave, Whitby, North Yorkshire, England
FORMATION
Upper Lias, Bifrons Zone
SIZE
4.3" wide on 6.5 x 6.3 x 3.4" rock
ITEM
#176347
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