Author:
Horodyski,R.J.
Year:
1993
Title:
Paleontology of Proterozoic Shales and Mudstones: Examples from the Belt Supergroup, Char Group, and Pahruump Group, Western USA
Reference:
Horodyski,R.J. (1993) Paleontology of Proterozoic Shales and Mudstones: Examples from the Belt Supergroup, Char Group, and Pahruump Group, Western USA Precambrian Research Vol. 61 # 3 P. 241- 278
Google Academy:
try to search by title in english
Genus Species Country(Region) From To
Trachysphaeridium Trachysphaeridium laufeldii Arizona Precambriam
Trachysphaeridium Trachysphaeridium sp Arizona Precambriam
Trachysphaeridium Trachysphaeridium timofeevii Arizona Precambriam
Vandalosphaeridium Vandalosphaeridium walcottii Arizona Precambriam