eutriconodont

Martín-Abad, Zhe-Xi Luo & Angela D. Buscalioni (2015). A Cretaceous eutriconodont and integument evolution in early mammals. Nature 526, 380–384. doi:10

冷，因此最後的離片椎目物種酷拉龍得以在此存活。翼龍開始演化出更大型的物種像是古神翼龍以及鳥掌翼龍。哺乳動物繼續興盛：真三尖齒獸類（英语：eutriconodont）出現了體型較大、類似貂熊的掠食者爬獸及戈壁錐齒獸（英语：Gobiconodon）；獸亞綱也開始有後獸下綱及真獸下綱的物種出現；多瘤齒獸

Li, C. Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont. Nature. 2011, 472 (7342): 181–185. Bibcode:2011Natur.472..181M. PMID 21490668

Li C. Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont. Nature. 2011-04, 472 (7342): 181–5. Bibcode:2011Natur.472..181M. PMID 21490668