Trilobite Crotalocephalina Size:Large The black-backed key ring lets

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

a species that was first discovered in 1907 and has only been found in Early Cretaceous deposits to date

Length: 5cm Width: 4cm Depth: 2

Lightly polished

Trilobite Crotalocephalina Size:Large The black-backed key ring letsCrotalocephalina 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