Trilobite Crotalocephalina Size:Large A group of pecten shells

A group of pecten shells found in the Lillo Formation

Crawfordsville

Length: 5cm Width: 4cm Depth: 2

The black-backed key ring lets the colours of the ammonite to really resonate

Still in its original matrix

Trilobite Crotalocephalina Size:Large A group of pecten shellsCrotalocephalina was thought to bear a passing resemblance to the head of a rattlesnake (Crotalus), hence its name. From Lamrakeb, Alnif, Morocco. Devonian, circa 390 million years old. In its original matrix. There are two choices of size with this trilobite. Average size of the trilobite not including the surrounding stone: Standard: L5cm x W 2. 5 cm. Large: 7cm x 3cm Measurements are approximate and the minimum size you should expect your item to