456 |
Redwood Leaf - impressions in limonite |
Dendraster venturensis |
|
Neogene (Pliocene) |
|
F-01 |
Whale bone- cross section showing bone cells, some filled with mud |
|
|
|
|
F-02 |
Redwood - wood fragment |
|
|
|
|
F-03 |
Tree branch - showing external shape |
|
|
|
|
F-04 |
Boring Clam Burrows |
Pholads sp. |
|
|
|
F-05 |
Amber with insect parts |
|
|
|
|
F-06 |
Scallop assemblage - external impressions in mudstone |
|
|
|
|
F-07 |
Turret shell - internal sandstone mold |
|
|
|
|
F-08 |
Olive shell - internal sandstone mold |
|
|
|
|
F-09 |
Clam (Eel river) - showing traces of original shell |
|
|
|
|
F-10 |
Clam assemblage (Eel river) - showing traces of original shell |
|
|
|
|
HSU-41 |
Coprolite - fossil cast of excrement |
|
|
|
|
427 |
Trace Fossil - Bird Tracks |
|
|
Paleogene (Eocene) |
Green River Formation |
580 |
Beetle (predacious water beetle) - preserved in asphalt |
Cybister explanatus |
|
Neogene (Pleistocene) |
Kern County, California |
257 & 258 |
Fern Leaf - positive and negative impressions |
Alethopteris seili |
|
Pennsylvanian |
Mazon Creek, Illinois |
1305 & 1306 |
Brachiopod - pyrite replacement (left: acid etched; right: natural) |
Paraspirifer bqwenockeri |
|
Devonian |
Silica Shale, Lucas County, Ohio |
624 |
Gastropod (snail) - internal sandstone mold |
|
|
Neogene (Pleistocene) |
Sonora, Mexico |
1279 |
Mammal Bone |
Unidentified |
|
Paleogene (Oligocene) |
South Dakota |
368 |
Redwood Tree Leaf - carbon film impression |
Sequoia sp. |
|
|
unknown |
157 |
Horn Corals - replaced with red agate |
Lophophyllum sp. |
|
Devonian |
Utah |