Stromatolite Sample Set 3 Plus

Tetradium cellulosum; Pooleville Member, Bromide Formation, Middle Ordovician, Oklamoma

Collenia undosa; Biwabik Formation, Precambrian, 2.1 Billion, Biwabik, Minnesota

Coenostroma pustuliferum; Petoskey Formation, Middle Devonian, Petoskey, Michigan

Palm Wood; (non-stromatolite); Morrison Formation, Jurassic, Utah