New hominoid mandible from the early Late Miocene Irrawaddy Formation in Tebingan area, central Myanmar

A new medium-sized hominoid mandibular fossil was discovered at an early Late Miocene site, Tebingan area, south of Magway city, central Myanmar. The specimen is a left adult corpus preserving strongly worn M2 and M3, fragmentary roots P4 M1, alveoli canine P3, the lower half symphysis. In Southeast Asia, two hominoids have been so far: Lufengpithecus from Yunnan Province, southern China, Khoratpithecus northern Thailand particular, neighboring village Tebingan. However, mandible shows apparent differences both genera in shape outline symphyseal section. has well-developed superior transverse torus, deep intertoral sulcus (= genioglossal fossa), thin, shelf-like inferior torus. contrast, each very shallow thick, rounded characteristic morphology symphysis suggests different taxon Khoratpithecus. Myanmar least kinds were likely present Miocene.