TY  - JOUR
T1  - A Petrified Williamsonia from Scotland
JF  - Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character (1896-1934)
VL  - 203
SP  - 101
EP  - 126
PY  - 1913/01/01/
UR  - http://dx.doi.org/10.1098/rstb.1913.0003
M3  - doi:10.1098/rstb.1913.0003
AU  - Seward, A.
ER  -