Belongs within: Archaeostraca. The Echinocaridina are a group of phyllocarid crustaceans known from the Silurian (or possibly the Ordovician) to the early Carboniferous (Briggs et al. 1993). Characters (from Rode & Lieberman 2002): Carapace subovate to subquadrate; anterior horn rounded or absent; posterior margin sinuous or convex. Rostrum free or absent, lacking longitudinal ridge. Carapace… Continue reading Echinocaridina