|
Coprolite |
|
Fern |
|
Agatized Coral |
|
Phylum Cnidaria, Class Anthozoa |
|
The Geologic Time Spiral |
|
Phylum Arthropoda, Class Cirripedia |
|
Phylum Brachiopoda |
|
Phylum Echinodermata, Class Echinoidea (Hemipneustes striato-radiatus) |
|
Freshwater Fish |
|
Celestine |
|
Gypsum (Selenite) |
|
Rhodochrosite |
|
Melanterite on Calcite |
|
Phylum Arthropoda, Class Trilobita |
|
Phylum Mollusca, Class Cephalopoda |
|
Sphalerite, Marcasite, Calcite |
|
Fluorite - Calcite |
|
Cobaltoan Calcite |
|
Sugilite |
|
Blue Fluorite |
