california academy of sciences geology: Carpannularia americana
california academy of sciences geology: Carpannularia americana
california academy of sciences geology: Carpannularia americana
california academy of sciences geology: Conantiopteris schuchmanii
california academy of sciences geology: Pityostrobus californiensis
california academy of sciences geology: Plant Fossil From The California Academy of Sciences Geology Collection
california academy of sciences geology: Quercophyllum platanoides
california academy of sciences geology: Quercophyllum platanoides