FIGURE 2 in Late middle Eocene caviomorph rodents from Contamana, Peruvian Amazonia

FIGURE 2. Dental nomenclature for upper teeth in occlusal view. 1, upper molar; 2, P4; 3, dP4. 1, paracone; 2, protocone; 3, metacone; 4, hypocone; 5, parastyle; 6, mesostyle; 7, anteroloph; 8, anterior arm of the protocone; 9, posterior arm of the protocone (= lingual protoloph); 10, posterior outgrowth of the protocone; 11, protoloph (= labial protoloph); 12, mure; 13, third transverse crest (= central transverse crest); 14, mesolophule; 15, mesoloph; 16, anterior arm of the hypocone; 17, metaloph; 18, posteroloph; 19, paraflexus; 20, hypoflexus/hypofossette; 21, confluence of the paraflexus with the hypoflexus; 22, mesoflexus/mesofossette; 23, metaflexus; 24, confluence of the metaflexus with the posteroflexus; 25, posteroflexus. Based on observations made on the new material, the dental terminology is modified after Wood and Wilson (1936), Fields (1957), Marivaux et al. (2004, 2017) and Antoine et al. (2012).