biostudies-literatureSun DThe National Key Research and Development Program of ChinaThe National Natural Science Foundation of ChinaThe Second Comprehensive Scientific Expedition on the Tibetan Plateaue16822https://www.ebi.ac.uk/biostudies/studies/S-EPMC10838079biostudies-literatureUnknown12As a member of Aceratheriinae, the genus <i>Plesiaceratherium</i> in Europe is widely distributed and highly diverse. However, only one species of <i>Plesiaceratherium</i> (<i>i.e.</i>, <i>P. gracile</i>) exists in China with a discontinuous distribution range. Recently, we have discovered new materials of <i>Plesiaceratherium</i> in the lower layers of the Zhang'enbao Formation exposed in Miaoerling in Tongxin County, China. The new materials are well-preserved and can be separated from other <i>Plesiaceratherium</i> species by the following combination of features: the long and generally flat skull, with closed frontoparietal crests; the deep nasal notch at the level of P4; the high supraorbital margin, with its anterior margin at the level of the M1/M2 boundary; the medium-sized upper IPeerJNew materials of plesiacerathere (Perissodactyla, Rhinocerotidae) from the late Early Miocene of Northern China.PMC108380792019QZKK07052023YFF080450142302013Deng TWang SSun DfalseNew materials of plesiacerathere (Perissodactyla, Rhinocerotidae) from the late Early Miocene of Northern China.As a member of Aceratheriinae, the genus <i>Plesiaceratherium</i> in Europe is widely distributed and highly diverse. However, only one species of <i>Plesiaceratherium</i> (<i>i.e.</i>, <i>P. gracile</i>) exists in China with a discontinuous distribution range. Recently, we have discovered new materials of <i>Plesiaceratherium</i> in the lower layers of the Zhang'enbao Formation exposed in Miaoerling in Tongxin County, China. The new materials are well-preserved and can be separated from other <i>Plesiaceratherium</i> species by the following combination of features: the long and generally flat skull, with closed frontoparietal crests; the deep nasal notch at the level of P4; the high supraorbital margin, with its anterior margin at the level of the M1/M2 boundary; the medium-sized upper I2024-01-01T00:00:00Z20242026-06-22T03:21:49.575Z2025-04-06T13:46:56.581ZS-EPMC108380793831300910.7717/peerj.16822