作者: A. W. CROMPTON , FARISH A. JENKINS
DOI: 10.1111/J.1469-185X.1968.TB00966.X
关键词: Mandibular first molar 、 Eozostrodon 、 Anatomy 、 Megazostrodon 、 Mammaliaformes 、 Mandibular second molar 、 Geology 、 Molar 、 Cynodont 、 Cusp (anatomy)
摘要: … and Triassic Periods. The earliest known mammals are found in rocks of late Triassic age, and … However, all agree that the late Triassic saw the emergence of a new level of vertebrate …