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EARLY FRESHWATER DIATOMS FROM THE UPPER CRETACEOUS BATTLE FORMATION IN WESTERN CANADA

2018; Society for Sedimentary Geology; Volume: 33; Issue: 12 Linguagem: Inglês

10.2110/palo.2018.045

1938-5323

Peter A. Siver, María I. Vélez, Monica Cliveți, Pier L. Binda,

Geology and Paleoclimatology Research

Research Article| December 21, 2018 EARLY FRESHWATER DIATOMS FROM THE UPPER CRETACEOUS BATTLE FORMATION IN WESTERN CANADA PETER A. SIVER; PETER A. SIVER 1Department of Botany, Connecticut College, New London, Connecticut 06320, USA Search for other works by this author on: GSW Google Scholar MARIA VELEZ; MARIA VELEZ 2Department of Geology, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada Search for other works by this author on: GSW Google Scholar MONICA CLIVETI; MONICA CLIVETI 2Department of Geology, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada Search for other works by this author on: GSW Google Scholar PIER BINDA PIER BINDA 2Department of Geology, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada Search for other works by this author on: GSW Google Scholar Author and Article Information PETER A. SIVER 1Department of Botany, Connecticut College, New London, Connecticut 06320, USA MARIA VELEZ 2Department of Geology, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada MONICA CLIVETI 2Department of Geology, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada PIER BINDA 2Department of Geology, University of Regina, Regina, Saskatchewan, S4S 0A2, Canada email: pasiv@conncoll.edu Publisher: SEPM Society for Sedimentary Geology First Online: 21 Dec 2018 Online Issn: 1938-5323 Print Issn: 0883-1351 Copyright © 2018, SEPM (Society for Sedimentary Geology) PALAIOS (2018) 33 (12): 525–534. https://doi.org/10.2110/palo.2018.045 Article history First Online: 21 Dec 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation PETER A. SIVER, MARIA VELEZ, MONICA CLIVETI, PIER BINDA; EARLY FRESHWATER DIATOMS FROM THE UPPER CRETACEOUS BATTLE FORMATION IN WESTERN CANADA. PALAIOS 2018;; 33 (12): 525–534. doi: https://doi.org/10.2110/palo.2018.045 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search Abstract Despite the rise of marine diatoms in the world's oceans throughout the Cretaceous, only a handful of fossil localities worldwide detail invasion of freshwater habitats by diatoms commencing in the Late Cretaceous. We report on the occurrence of numerous freshwater diatom specimens and species from the Battle Formation, an extensive freshwater locality in western Canada that formed in the Late Cretaceous approximately 66.5 million years ago (Ma). The formation represents one of the oldest known localities worldwide harboring definitive remains of freshwater diatoms, contains the oldest known freshwater specimens of the centric diatom genus Aulacoseira, and confirms that these early Aulacoseira colonizers formed filaments linked together with interdigitating spines. We further document a high diversity of araphid pennate diatoms belonging to the order Fragilariales. Seven pennate morphotypes were uncovered, six of which definitively lacked a raphe and whose closest modern relatives are in the genera Fragilariforma, Fragilaria, and Stauroforma. Given the extensive coverage of the Battle Formation, it is possible that it represents a network of numerous smaller shallow waterbodies that collectively offered a diversity of environments for colonization, making it a unique deposit for examination of early freshwater diatoms. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.