Abstract of a paper 'The phylogeny of the ammonite family Liparoceratidae' by [Leonard Frank] Spath Paper reference code: B.117 The paper's subject has been studied by [Arthur Elijah] Trueman, who drew on work by [Alpheus] Hyatt and [S S] Buckman. Explains how this paper departs from Trueman's conclusions. Outlines the main points covered in the paper. [Not published]. Received 17 February 1937 [February 1937]