白垩纪
姐妹团
古生物学
形态学(生物学)
分类单元
系统发育树
生物
系统发育学
动物
克莱德
生物化学
基因
作者
Alexander O. Averianov,Thomas Martin,А. В. Лопатин,Pavel P. Skutschas,Dmitry D. Vitenko,Rico Schellhorn,P. N. Kolosov
标识
DOI:10.1016/j.cretres.2024.105836
摘要
Docodonta are the most abundant and taxonomically diverse group of mammaliaforms in the high paleolatitude Lower Cretaceous Teete locality in Yakutia, Russia. Docodontans are represented by the tegotheriids Khorotherium yakutense and Ergetiis ichchi gen. et sp. nov., and possibly two more taxa known from fragmentary specimens (Docodonta indet.). Ergetiis ichchi gen. et sp. nov. shows a reduction and posterior shift of the angular process of the dentary which could indicate a reduction of the mandibular middle ear potentially in a way analogous to the transitional mammalian middle ear of Eutriconodonta. A revised phylogenetic analysis of Docodonta suggests a stemward position of Docodontidae and a sister group relationship for Simpsonodontidae and Tegotheriidae.
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