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mods: The middle Triassic marine invertebrate faunas of North America Smith, James Perrin 1864-1931 creator author. Geological Survey (U.S.) issuing body. text bibliography dcu 1914 monographic eng remote 1 online resource (356 unnumbered pages) : illustrations. by James Perrin Smith. Includes bibliographical references (pages 20-23) and index. n------ Paleontology North America Triassic Paleontology North America Paleontology Triassic Geologic Period North America From 190 to 230 million years ago fast I 19.16:83 I 19.16:83 Middle Triassic marine invertebrate faunas of North America Smith, James Perrin, 1864-1931. (DLC)gs 14000478 (OCoLC)3138382 Professional paper (Geological Survey (U.S.)) ; no. 83 https://purl.fdlp.gov/GPO/gpo79271 OCLCE 150211 20211120182126.0 in00003835027 eng