This week’s Fossil Friday is a two-for-one! This single slab, found by Allan Lindoe in the Devonian Road River formation in the Northwest Territories, contains the remains of both Gladiobranchus (an acanthodian or “spiny shark”) and Aserotaspis (an agnathan, or jawless fish). This was one of the specimens that we got to examine during the Paleo 2026 workshop on early fish identification led by Dr. Jobbins and is UALVP47080.

#palaeontology #paleontology #fossils #fish #fossilfriday #alberta