[Rockhounds] "Flora of the Hermit Shale, Grand Canyon, Arizona" Now Online as PDF file

[Paul]

The below classic monograph on the fossil plants of the Hermit
Shale, Permian, Arizona is now available online as a downloadable PDF file.

Flora of the Hermit shale, Grand Canyon, Arizona by David White
Carnegie Institution of Washington publication no. 405
https://www.biodiversitylibrary.org/bibliography/166069#/summary
https://www.biodiversitylibrary.org/subject/Grand Canyon#/titles


Yours,

Paul H.