Kingdom Animalia Class Trilobita | Phylum Arthropoda Rank Genus | |
Etheridgaspis is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Arenig stage of the Ordovician Period, approximately 478 to 471 million years ago.
References
Etheridgaspis Wikipedia(Text) CC BY-SA