TY - JOUR T1 - On a Dorsal Dermal Spine of the Hylaeosaurus, Recently Discovered in the Strata of Tilgate Forest JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 140 SP - 391 EP - 392 PY - 1850/01/01/ UR - http://dx.doi.org/10.1098/rstl.1850.0018 M3 - doi:10.1098/rstl.1850.0018 AU - Mantell, G. ER -