Deiphon

Deiphon Trilobite

Silurian

A very spiny trilobite about 4 cm in length when fully grown. The cheeks are reduced and both cephalon and pygidium are remarkable for their pair of large, robust spines. The lifestyle of this unusual form is disputed. It may have been pelagic, and the eyes point forwards, but they are rather smaller than other known open water forms. It may well have been an active trilobite living on soft mud, where the spines would have helped it stay on the sediment surface. This is known as a "snowshoe" adaptation.

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