TY  - JOUR
T1  - Further Observations on the Organization of the Fossil Plants of the Coal-Measures. Part I. Calamites, Calamostachys, and Sphenophyllum
JF  - Philosophical Transactions of the Royal Society of London. B (1887-1895)
VL  - 185
SP  - 863
EP  - 959
PY  - 1894/01/01/
UR  - http://dx.doi.org/10.1098/rstb.1894.0019
M3  - doi:10.1098/rstb.1894.0019
AU  - Williamson, W.
AU  - Scott, D.
ER  -