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Llanvirnian
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Paleozoic
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Cow Head Group (1)
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Devonian
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Upper Devonian
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lower Paleozoic (1)
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Ordovician
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Buchans Group (1)
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Davidsville Group (1)
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Gualcamayo Formation (1)
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Lower Ordovician
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Arenigian (19)
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Tremadocian (8)
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Lushs Bight Group (1)
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Middle Ordovician
-
Llandeilian (12)
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Llanvirnian (52)
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Table Head Group (1)
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Whiterockian (3)
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Skiddaw Slates (4)
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Upper Ordovician
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Ashgillian (8)
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Caradocian
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Borrowdale Volcanic Group (1)
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Road River Formation (1)
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Silurian (1)
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palynomorphs
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acritarchs (6)
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Chitinozoa (5)
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petroleum (1)
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Llanvirnian
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Journal Article
Geochemistry and diagenetic history of the Ordovician Lower Head Formation sandstones, western Newfoundland, Canada
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 28 June 2016
Canadian Journal of Earth Sciences (2016) 53 (12): 1501–1510.
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Journal Article
A re-appraisal of the petrogenesis and tectonic setting of the Ordovician Fishguard Volcanic Group, SW Wales
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 28 July 2015
Geological Magazine (2016) 153 (3): 410–425.
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Journal Article
Description and ecology of a new Middle Ordovician (Llanvirn) odontopleurid trilobite from the Builth Inlier of Mid-Wales, with a review of the genus Meadowtownella
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 09 August 2011
Geological Magazine (2012) 149 (3): 397–411.
Journal Article
Tunneling trilobites: Habitual infaunalism in an Ordovician carbonate seafloor
Journal: Geology
Publisher: Geological Society of America
Published: 01 August 2006
Geology (2006) 34 (8): 657–660.
FIGURES
Journal Article
Mid–Late Ordovician magmatism and metamorphism along the Gander margin in central Newfoundland
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 March 2006
Journal of the Geological Society (2006) 163 (2): 347–362.
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Journal Article
TRIARTHRINID TRILOBITES (OLENIDAE) FROM THE MIDDLE AND UPPER ORDOVICIAN, PRECORDILLERA OF ARGENTINA
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 January 2005
Journal of Paleontology (2005) 79 (1): 89–109.
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Journal Article
Heavy minerals solve structural and stratigraphic problems in Ordovician strata of the western Irish Caledonides
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 January 2003
Geological Magazine (2003) 140 (1): 25–30.
FIGURES
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Journal Article
Epizoan-sponge Interactions in the Early Ordovician of the Argentine Precordillera
Journal: PALAIOS
Publisher: SEPM Society for Sedimentary Geology
Published: 01 August 2000
PALAIOS (2000) 15 (4): 261–272.
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Journal Article
MORPHOLOGICAL AND PALEOECOLGICAL ANALYSIS OF THE ORDOVICIAN ANKYROID LAGYNOCYSTIS (STYLOPHORA: ECHINODERMATA)
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 March 2000
Journal of Paleontology (2000) 74 (2): 254–262.
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Journal Article
Interpretations of SHRIMP and isotope dilution zircon ages for the geological time-scale: 1. The early Ordovician and late Cambrian
Journal: Mineralogical Magazine
Published: 01 February 2000
Mineralogical Magazine (2000) 64 (1): 43–57.
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Journal Article
Age of the Grampian orogeny in Scotland and Ireland
Journal: Journal of the Geological Society
Publisher: Geological Society of London
Published: 01 December 1999
Journal of the Geological Society (1999) 156 (6): 1231–1236.
Journal Article
Ordovician pliomerid and prosopiscid trilobites from Argentina
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 November 1999
Journal of Paleontology (1999) 73 (6): 1144–1154.
Journal Article
Ontogenetic changes of Bacculae in Korean asaphid trilobites and their taxonomic implications
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 November 1999
Journal of Paleontology (1999) 73 (6): 1210–1213.
Journal Article
A petrographic approach for evaluating trace-element mobility in a black shale
Journal: Journal of Sedimentary Research
Publisher: SEPM Society for Sedimentary Geology
Published: 01 September 1998
Journal of Sedimentary Research (1998) 68 (5): 970–980.
Journal Article
Early phylogeny and subclass division of the Crinoidea (Phylum Echinodermata)
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 May 1998
Journal of Paleontology (1998) 72 (3): 499–510.
Journal Article
Recognition of the Trans-European suture zone (TESZ) by the palaeobiogeographical distribution pattern of early to middle Ordovician
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 September 1997
Geological Magazine (1997) 134 (5): 617–625.
Journal Article
Arenig biostratigraphy of the Pointe-de-Lévy slice, Quebec Appalachians, Canada
Journal: Canadian Journal of Earth Sciences
Publisher: Canadian Science Publishing
Published: 01 June 1997
Canadian Journal of Earth Sciences (1997) 34 (6): 733–752.
Journal Article
Discussion on a revision of Ordovician series and stage division from historical type area
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 01 November 1996
Geological Magazine (1996) 133 (6): 767–772.
Journal Article
Calibrating the Ordovician radiation of marine life; implications for Phanerozoic diversity trends
Journal: Paleobiology
Publisher: Paleontological Society
Published: 01 April 1996
Paleobiology (1996) 22 (2): 304–309.
Journal Article
New evidence for land plants from the lower Middle Ordovician of Saudi Arabia
Journal: Geology
Publisher: Geological Society of America
Published: 01 January 1996
Geology (1996) 24 (1): 55–58.
