Figure 1. Dental terminology. A, B in Early Palaeogene Louisinidae (Macroscelidea, Mammalia), their relationships and north European diversity

Figure 1. Dental terminology. A, B, upper molar; C, D, lower molar, all shown as from left side in occlusal view. Mesial is to left; distal is to right; buccal in uppers is above and in lowers below; lingual in uppers is below and in lowers above. A, C, primitive morphotype; B, D, derived morphotype. Some cusps and crests shown in A and C are assumed for B and D, respectively. Some taxa combine some features of the different morphotypes. Abbreviations: co, cristid obliqua; dclm, distal cingulum; ecf, ectoflexus; ecfd, ectoflexid; eclm, ectocingulum; ectsd, ectostylid; entd, entoconid; entf, entoflexus; entld, entoconulid; ents, entostyle; hyd, hypoconid; hyfd, hypoflexid; hyld, hypoconulid; hyp, hypocone; hyphd, hypolophid; mbstd, mesiobuccal stylid; mclm, mesial cingulum; mes, mesostyle; mesd, mesoconid; mestd, mesostylid; met, metacone; metclm, metacingulum; metd, metaconid; metle, metaconule; metph, metaloph; mets, metastyle; pacd, paracristid; paclm, paracingulum; pad, paraconid; par, paracone; parle, paraconule; pas, parastyle; pocld, postcingulid; poclm, postcingulum; pof, postflexus; poentcd, postentocristid; pohycd, posthypocristid; pomec, postmetacrista; pometcd, postmetacristid; pometlc, postmetaconule crista; popac, postparacrista; poparlc, postparaconule crista; poprc, postprotocrista; precld, precingulid; preclm, precingulum; preentcd, pre-entocristid; pref, preflexus; premec, premetacrista; premetcd, premetacristid; premetlc, premetaconule crista; prepac, preparacrista; preparlc, preparaconule crista; preprc, preprotocrista; procd, protocristid; prot, protocone; protd, protoconid; prs, protostyle; prtph, protoloph; prtphd, protolophid; tb, trigon basin; tgb, trigonid basin; tlb, talonid basin. Tooth abbreviations in text: I, incisor; C, canine; P, premolar; M, molar; DP, deciduous premolar.