TY - JOUR T1 - The Pelmatoporinae, an Essay on the Evolution of a Group of Cretaceous Polyzoa JF - Philosophical Transactions of the Royal Society of London. Series B, Containing Papers of a Biological Character (1896-1934) VL - 209 SP - 191 EP - 228 PY - 1920/01/01/ UR - http://dx.doi.org/10.1098/rstb.1920.0004 M3 - doi:10.1098/rstb.1920.0004 AU - Lang, W. ER -