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Atlantic Geology

Stratigraphic and temporal context and faunal diversity of Permian- continental tetrapod assemblages from the Fundy rift basin, eastern Canada Hans-Dieter Sues and Paul E. Olsen

Volume 51, 2015 Article abstract The in Nova Scotia and New Brunswick is the largest exposed rift URI: https://id.erudit.org/iderudit/ageo51art05 basin of the Newark Supergroup and also extends beneath the . Its strata can be divided into four tectonostratigraphic sequences (TS). TS I is See table of contents represented by the probably Permian Honeycomb Point Formation and possibly the Lepreau Formation. TS II includes the Wolfville Formation with the probably Middle Economy Member and the early Late Triassic Publisher(s) Evangeline Member. These members have yielded markedly different assemblages of continental tetrapods. TS III comprises most of the Blomidon Atlantic Geoscience Society Formation, which is Norian to Rhaetian in age. The Blomidon Formation has yielded few skeletal remains of tetrapods to date but many tetrapod tracks. TS ISSN IV includes the late Rhaetian top of the Blomidon Formation and the McCoy Brook Formation, which overlies the North Mountain Basalt and is latest 0843-5561 (print) Rhaetian and earliest Jurassic (Hettangian) in age. The McCoy Brook Formation 1718-7885 (digital) has yielded a diversity of continental tetrapods and lacks any of the characteristic Late Triassic forms. Recent work has correlated the Global Explore this journal Boundary Stratotype Section and Point (GSSP) for the base of the Jurassic (Hettangian) to a level above the North Mountain Basalt. Thus most of the tetrapod from the McCoy Brook Formation are latest Rhaetian in age, Cite this article but the higher horizon with skeletal remains of sauropodomorph may be earliest Hettangian in age. The Fundy basin preserves the only known, Sues, H.-D. & Olsen, P. E. (2015). Stratigraphic and temporal context and faunal stratigraphically tightly constrained record of the profound biotic changes in diversity of Permian-Jurassic continental tetrapod assemblages from the Fundy continental ecosystems across the Triassic-Jurassic transition. rift basin, eastern Canada. Atlantic Geology, 51, 139–205.

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Hans-Dieter Sues1* and Paul E. Olsen2

1. Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, MRC 121, P.O. Box 37012, Washington, DC 20013-7012, U.S.A. 2. Lamont-Doherty Earth Observatory of Columbia University, 61 Route 9W, Palisades, New York 10964-1000, U.S.A.

*Corresponding author:

Date received 30 July 2014 ¶ Date accepted 25 November 2014

Abstract The Fundy basin in Nova Scotia and New Brunswick is the largest exposed rift basin of the Newark Supergroup and also extends beneath the Bay of Fundy. Its strata can be divided into four tectonostratigraphic sequences (TS). TS I is represented by the probably Permian Honeycomb Point Formation and possibly the Lepreau Formation. TS II includes the Wolfville F