古脊椎动物学报2022，Vol.60Issue(4)：271-277,7.DOI:10.19615/j.cnki.2096-9899.220403
副竹鼠(拟速掘鼠亚科,鼠超科)一新种在甘肃临夏盆地的发现
A new species of Pararhizomys(Tachyoryctoidinae,Muroidea)from Linxia Basin of Gansu Province
摘要
Abstract
An anterior part of skull was recently found near Xiayangwan in Guanghe County,Gansu Province,presumably from the Liushu Formation.The skull represents a new species of Pararhizomys,named as Pararhizomys parvulus.The new species is characterized by:small size,upper molars higher crowned and mesio-lingually hypsodont with sinus deeper than mesosinus;sinus and mesosinus in M3 being transverse and overlapping each other,but sinus longer than mesosinus on occlusal view.Based on shared apomorphies(lingually hypsodont upper molars and transverse sinus and mesosinus on M3 occulsal surface),P.parvulus and P.huaxiaensis are supposed to form a sister group.However,P.parvulus may be more derived than P.huaxiaensis as demonstrated by the more hypsodont molars and the deeper sinus in M3.关键词
甘肃临夏盆地/晚中新世/柳树组/拟速掘鼠亚科,副竹鼠属Key words
Linxia Basin,Gansu/Late Miocene/Liushu Formation/Pararhizomys,Tachyoryctoidinae分类
生物科学引用本文复制引用
王伴月..副竹鼠(拟速掘鼠亚科,鼠超科)一新种在甘肃临夏盆地的发现[J].古脊椎动物学报,2022,60(4):271-277,7.基金项目
中国科学院前沿科学重点研究项目(编号:QYZDY-SSW-DQC022)和中国科学院战略性先导科技专项(B类)(编号:XDB26000000)资助. （编号:QYZDY-SSW-DQC022）
