Humboldt State UniversityNatural History Museum

Home | Exhibits | Making Fossils

Making Fossils Display Case Index

Acquisition # Image Common Name Species Name Period (Epoch) Location
427 Trace Fossil - Bird Tracks    Paleogene (Eocene)  Green River Formation
257 & 258 Fern Leaf - positive and negative impressions Alethopteris seili Pennsylvanian Mazon Creek, Illinois
368 Redwood Tree Leaf - carbon film impression Sequoia sp.   unknown
157 Horn Corals - replaced with red agate Lophophyllum sp.  Devonian Utah
456 Redwood Leaf - impressions in limonite Dendraster venturensis Neogene (Pliocene)  
580 Beetle (predacious water beetle) - preserved in asphalt Cybister explanatus Neogene (Pleistocene) Kern County, California
624 Gastropod (snail) - internal sandstone mold   Neogene (Pleistocene) Sonora, Mexico
1279 Mammal Bone Unidentified Paleogene (Oligocene) South Dakota
1305 & 1306 Brachiopod - pyrite replacement (left: acid etched; right: natural) Paraspirifer bqwenockeri Devonian Silica Shale, Lucas County, Ohio
 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      

© HSU NHM 1998 | Last modified 13 July 2004