TY  - JOUR
T1  - On the Organisation of the Fossil Plants of the Coal-Measures. Part XI. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 30
SP  - 550
EP  - 554
PY  - 1879/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1879.0160
M3  - doi:10.1098/rspl.1879.0160
AU  - Williamson, W.
ER  -