Author:
Stidd,B.M.;Hall,J.W.
Year:
1970
Title:
The natural affinity of the Carboniferous seed, Callospermarion.
Reference:
Stidd,B.M. et al. (1970) The natural affinity of the Carboniferous seed, Callospermarion. American Journal of Botany Vol. 57 # 7 P. 827- 836
Google Academy:
try to search by title in english
Genus Species Country(Region) From To
Callospermarion Callospermarion pusillum Illinois Carboniferous
Vesicaspora Vesicaspora sp Illinois Carboniferous