Fig. 2
Terminology of cusps, lophs and reentrants of M1 (left) and m1 (right) in Tachyoryctoides. M1: ac anterocone, al anteroloph, as anterosinus, enl entoloph, hy hypocone, msl mesoloph, mss mesosinus, mt metacone, mtl metaloph, pa paracone, postl posteroloph, posts posterosinus, pr protocone, prl protoloph, prs protosinus, s sinus, m1: acd anteroconid, ald anterolophid, alpd anterolophulid, asd anterosinusid, ectld ectolophid, end entoconid, hld hypolophid, hyd hypoconid, msld mesolophid, mssd mesosinusid, mtd metaconid, mtld metalophid, postld posterolophid, postsd posterosinusid, prd protoconid, prsd protosinusid, sd sinusid