New remains of Neotropical bunodont litopterns and the systematics of Megadolodinae (Mammalia: Litopterna) Author Carrillo, Juan D. Author Suarez, Catalina Author Benites-Palomino, Aldo Marcelo Author Vanegas, Andrés Author Link, Andrés Author Rincón, Aldo F. Author Luque, Javier Author Cooke, Siobhán B. Author Tallman, Melissa Author Billet, Guillaume text Geodiversitas 2023 2023-08-31 45 15 409 447 journal article 265724 10.5252/geodiversitas2023v45a15 ca63aaab-1724-48c0-99da-4a79f0e151da 1638-9395 8319166 Subfamily MEGADOLODINAE Cifelli & Villarroel, 1997 EMENDED DIAGNOSIS . — Bunodont litopterns with two lower incisors, the distal (lateral) being significantly larger (tusk-like) than the mesial (central). Metaconid absent on p2. Metaconule of P4 isolated. Mesostyle absent on P3-4 but present on M1-3. Strong paracone and metacone folds on upper molars. M3 with well-developed hypocone. Megadolodinae is supported by the following synapomorphies: bunodont cheek teeth; small parastyle on P3-4; and m1-3 without paralophid.