00000nam 2200000zi 4500 9.874226 CaOODSP 20230131161139 m o d f cr mn||||||||| 190604t19941994oncab ob f001 0 eng d 0660153688 (print) CaOODSP eng rda CaOODSP eng eng fre n-cn--- M42-467E-PDF M42-467E Tozer, E. T. (Edward T.), 1924- author. Canadian Triassic ammonoid faunas / E.T. Tozer. Ottawa, Ontario : Geological Survey of Canada, 1994. ©1994 1 online resource (663 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Bulletin ; 467 Includes bibliographical references (pages 272-289) and index. "Data are given on the morphology and distribution of all known Canadian Triassic Ammonoidea, except the Arcestaceae. Material is described from about 850 localities in the Arctic Islands, Yukon, British Columbia and Alberta. Localities in the Arctic Islands are in the Sverdrup Basin. Except for one collection from a well in northwest Alberta, all specimens from Western Canada are from exposures in the Cordillera. A biochronology is proposed covering the whole of the Triassic, from the earliest (Early Griesbachian) to latest (Late Norian). Fifty-six divisions (zones, subzones, horizons) are recognized, grouped within stages and substages as follows: Lower Griesbachian (2), Upper Griesbachian (2), Dienerian (4), Smithiun (3), Spathian (2), Lower Anisian (3), Middle Anisian (3), Upper Anisian (2), Ladinian (1 O), Lower Carnian (3), Upper Carnian (4), Lower Norian (7), Middle Norian (7), Upper Norian (4). The ammonoids are classified as 522 species (243 new) in 256 genera (46 new)"--Abstract, page 1. Issued also in print format. Includes abstracts and summaries in English and French. gccst Molluscs gccst Fossils gccst Palaeontology Canada. Natural Resources Canada. Geological Survey of Canada. Canadian Triassic ammonoid faunas / (CaOODSP)9.610789 Bulletin (Geological Survey of Canada) 467. (CaOODSP)9.504778 PDF 60.17 MB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m42/M42-467-eng.pdf 194325