Author:
Kosanke,R.M.
Year:
1951
Title:
A type of Boghead Coal from Illinois.
Reference:
Kosanke,R.M. (1951) A type of Boghead Coal from Illinois. American Journal of Science Vol. 249 # 6 P. 444- 450
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Genus Species Country(Region) From To
Laevigatosporites Laevigatosporites Illinois Pennsylvanian