Stratigraphical and geographical distribution of the fossil pollen group Triprojectacites (Aquilapollenites and closely related forms).
Reference:
Stanley,E.A. (1970)
Stratigraphical and geographical distribution of the fossil pollen group Triprojectacites (Aquilapollenites and closely related forms). Geological Society of America, Abstracts with Program, Annual Meeting
P. 37- 37