Palaeoecological and evolutionary significance of anatomically preserved terrestrial plants in Upper Carboniferous marine goniatite bullions.
Reference:
Scott,A.C. et al. (1997)
Palaeoecological and evolutionary significance of anatomically preserved terrestrial plants in Upper Carboniferous marine goniatite bullions. Journal of the Geological Society, London
Vol. 154 # 1 P. 61- 68