| 4018 
 | Stony Meteorite, Fell in Holbrook, Arizona in 1912. | Chondrite |  |  |  | 
              
                      | 4019 
 | Stony Iron Meteorite (polished section), Found in Brenham, Kansas, 1882. | Pallasite |  |  |  | 
              
                      | 4020 
 | Iron Pyrite |  |  |  |  | 
              
                      | 4015 
 | Witwatersrand conglomerate, South Africa |  |  |  |  | 
              
                      | 4016 
 | Pyrite flowers in shale |  |  |  |  | 
              
                      | 4000 
 | Banded Iron Formation |  |  |  |  | 
              
                      | 4021 
 | Cleavage fragment of gypsum |  |  |  |  | 
              
                      | 4005 
 | Stromatolite, Mount Nelson Formation, British Columbia |  |  |  |  | 
              
                      | 4025 
 | Iron Formation Stromatolite, Biwabik Formation, Minnesota |  |  |  |  | 
              
                      | 4003 
 | "Elephant skin", White Sea deposits of Russia | fossil bacterial mat (cast) |  |  |  | 
              
                      | 4001 
 | Charnwood forest, Leicestershire, England | Charnia masoni (cast) |  |  |  | 
              
                      | 4004 & 4011 
 | White Sea deposits of Russia | Charnia masoni (cast) |  |  |  | 
              
                      | 4010 
 | Jelly (medusa), White Sea deposits of Russia | Cyclomedusa (cast) |  |  |  | 
              
                      | 4014 
 | Ediacara fossil beds of Australia | Dickinsonia costata (cast) |  |  |  | 
              
                      | 4012 
 | Ediacara fossil beds of Australia | Dickinsonia lissa (cast) |  |  |  | 
              
                      | 4006 
 | Jelly (medusa), White Sea deposits of Russia | Eoporpita (cast) |  |  |  | 
              
                      | 4007 
 | burrowing sea anemone, White Sea deposits of Russia | Niemiana (cast) |  |  |  | 
              
                      | 4008 
 | Jelly (medusa), White Sea deposits of Russia | Protodipleurosoma rugulosum (cast) |  |  |  | 
              
                      | 4009 
 | White Sea deposits of Russia | Pteridinium (cast) |  |  |  | 
              
                      | 4013 
 | Ediacara fossil beds of Australia | Tribrachidium heraldicum (cast) |  |  |  | 
              
                      | 4023 
 | Nickel-Iron Meteorite, Canyon Diablo Meteor crater, Arizona. | Octahedrite |  |  |  | 
              
                      | 4022 
 | Banded Iron Formation (slab), Australia |  |  |  |  | 
              
                      | 4001 
 | Charnwood forest, Leicestershire, England | Charnia masoni (cast) |  |  |  |