North America
 Burgess Shale@ (5) Calvert Cliffs@ (3) Cincinnatian Series@ (6) Colville River@ (1) Falls of the Ohio@ (1) Green River@ (3) | Green River@ (3) La Brea@ (2) Mazon Creek@ (1) Morrison Formation@ (2) Petrified Forest@ (2) Wheeler Shale@ (2) |
