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Silurian-age fossils from the Paleozoic Paraná Basin, southern Brazil

1985; Geological Society of America; Volume: 13; Issue: 7 Linguagem: Inglês

10.1130/0091-7613(1985)13 2.0.co;2

1943-2682

Jane Gray, G. Kent Colbath, Álvaro De Faria, A. J. Boucot, David M. Rohr,

Paleontology and Evolutionary Biology

Research Article| July 01, 1985 Silurian-age fossils from the Paleozoic Paraná Basin, southern Brazil Jane Gray; Jane Gray 1Department of Biology, University of Oregon, Eugene, Oregon 97403 Search for other works by this author on: GSW Google Scholar G. K. Colbath; G. K. Colbath 2Department of Invertebrate Zoology, Smithsonian Institution, Washington, D.C. 20560 Search for other works by this author on: GSW Google Scholar Álvaro de Faria; Álvaro de Faria 3Departamento de Geosciências, Universidade de Brasília, 70.910 Brasília, D. F., Brazil Search for other works by this author on: GSW Google Scholar A. J. Boucot; A. J. Boucot 4Department of Geology, Oregon State University, Corvallis, Oregon 97331 Search for other works by this author on: GSW Google Scholar D. M. Rohr D. M. Rohr 5Department of Geology, Sul Ross State University, Alpine, Texas 79732 Search for other works by this author on: GSW Google Scholar Author and Article Information Jane Gray 1Department of Biology, University of Oregon, Eugene, Oregon 97403 G. K. Colbath 2Department of Invertebrate Zoology, Smithsonian Institution, Washington, D.C. 20560 Álvaro de Faria 3Departamento de Geosciências, Universidade de Brasília, 70.910 Brasília, D. F., Brazil A. J. Boucot 4Department of Geology, Oregon State University, Corvallis, Oregon 97331 D. M. Rohr 5Department of Geology, Sul Ross State University, Alpine, Texas 79732 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1985) 13 (7): 521–525. https://doi.org/10.1130/0091-7613(1985)13 2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Jane Gray, G. K. Colbath, Álvaro de Faria, A. J. Boucot, D. M. Rohr; Silurian-age fossils from the Paleozoic Paraná Basin, southern Brazil. Geology 1985;; 13 (7): 521–525. doi: https://doi.org/10.1130/0091-7613(1985)13 2.0.CO;2 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 SocietyGeology Search Advanced Search Abstract This paper is the first example of how Middle Ordovician to Lower Silurian land plant microfossils, commonly present in otherwise unfossiliferous or poorly fossiliferous, nonmarine, or nearshore facies, may be used for biostratigraphic purposes. This new information permits the recognition of a broad regional unconformity extending from the Paraná Basin to Arabia. Conclusive evidence for the presence of Silurian rocks in the Paraná Basin of southeastern Brazil is developed. The age is based on organic microfossils, including tetrahedral tetrads of land-plant spores and phytoplankton ("acritarchs" and prasinophytes) that were recovered from body- and trace-fossil-bearing rocks of the northeastern Paraná Basin. Both the plant spores and phytoplankton indicate an Early Silurian (early Llandoverian) age, and support the previous permissive Silurian age assignment based on the trace fossil Arthrophycus and invertebrate body fossils. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.