Pseudogygites lantimarginatus Previous Start slideshow Next 1 of 2 Details Added 17th February 2018, 4:30 pm By Graeme Edited 13th April 2019, 6:47 pm Views 996 Send image as e-card Tags: Asaphidae, Canada, Ontario, Billings Shale formation, Ottawa, Iapetus Ocean, Ordovician, Trilobite, Asaphida