Archaeoniscus brodiei Milne-Edwards -- Highly unusual cluster of at least 10 isopods on 55mm slab. Avg. 8-10mm each isopod. Isopods ("pillbugs" or "sowbugs" to most people) are surprisingly rare as fossils. The oldest known examples are Carboniferous, then they don't have a good fossils record until the Jurassic! This is the first multiple slab of Archaeoniscus we have seen.
