Stratigraphic nomenclature of the Newark Supergroup of eastern North America Luttrell, Gwendolyn Lewise Werth 1927- creator author. Geological Survey (U.S.) issuing body. text bibliography Terminology. vau 1989 monographic eng remote 1 online resource (v, 136 pages, 1 page of plates) : illustrations. by Gwendolyn W. Luttrell. Title from title screen (viewed Aug. 1, 2014). Includes bibliographical references. n------ From 140 to 230 million years ago fast Geology, Stratigraphic Nomenclature Geology, Stratigraphic Jurassic Nomenclature Geology, Stratigraphic Triassic Nomenclature Geology, Stratigraphic Jurassic Geologic Period Triassic Geologic Period I 19.3:1572 I 19.3:1572 Stratigraphic nomenclature of the Newark Supergroup of eastern North America Luttrell, Gwendolyn Lewise Werth, 1927- (DLC) 88600291 (OCoLC)18381694 Geological Survey bulletin ; 1572 https://purl.fdlp.gov/GPO/gpo62102 COP 140805 20211120173438.0 in00003602553 eng