Mesozoic Transitions Page 13
Item Metadata
Title
Mesozoic Transitions Page 13
Date Created
1925
Description
This is a digital copy of page 13 of James Thornton's 1925 Wyoming Trip geological field book. Pages 13–15 and 49 were selected for the timeline because it is thought that they provide detailed sketches of the Permian (Lyons, Satanka) and Triassic (Chugwater) formations specifically mentioned in the Western History Center's framework for developing the timeline with Gemini.
Type
Text
Creator
James Thornton
Language
ENG
Is Part Of
James Thornton's 1925 Wyoming Trip Geological Field Book, SpecColl_01.2026.01 WyCaC US. Casper College Archives and Special Collections.
Identifier
SpecColl_01.2026.01_ThorntonGeological_Page_013
Format
JPG
Original Format
Paper
Citation
James Thornton, “Mesozoic Transitions Page 13,” Goodstein Foundation Library Western History Center Digital Collections, accessed April 24, 2026, https://caspercollege.cvlcollections.org/items/show/10310.