On the presence of tetrads of resistant spores in the tissue of Sporocarpon furcatum Dawson from the Upper Devonian of America.
Reference:
Kidston,R. et al. (1935)
On the presence of tetrads of resistant spores in the tissue of Sporocarpon furcatum Dawson from the Upper Devonian of America. Transactions of the Royal Society of Edinburgh.Earth Sciences
Vol. 53 # 28 P. 597- 601