''Eocyphinium'' is an extinct genus of

trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...

from the

Carboniferous The Carboniferous ( ) is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period million years ago ( Mya), to the beginning of the Permian Period, million years ago. The name ''Carbonifero ...

Sources

* Fossils (Smithsonian Handbooks) by David Ward (Page 65) Carboniferous trilobites Proetidae Proetida genera Trilobites of Europe {{proetida-stub