TY - JOUR T1 - On the Skeleton of the Marsipobranch Fishes. Part II. Petromyzon JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 174 SP - 411 EP - 457 PY - 1883/01/01/ UR - http://dx.doi.org/10.1098/rstl.1883.0010 M3 - doi:10.1098/rstl.1883.0010 AU - Parker, W. ER -