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1

Simpson Group (Middle Ordovician) Trilobites of Oklahoma

by Shaw, Frederick C.
Published in Journal of Paleontology (1974)
“...The Middle Ordovician Simpson Group of southern Oklahoma consists of an exceptionally continuous...”

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2

A new Middle Ordovician sponge from western Newfoundland

by Rigby, J. Keith
Published in Canadian Journal of Earth Sciences (1977)
“... the Middle Ordovician Long Point Group of western Newfoundland. The massive sponge has a three dimensional...”

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3

Middle Ordovician (Whiterockian) gastropods of western Newfoundland: Macluritoidea and Euomphaloidea

by Rohr, David M., Measures, E. A.
Published in Journal of Paleontology (2001)
“... described by E. Billings in 1865 from Middle Ordovician (Whiterockian) strata of Newfoundland are revised...”

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4

Macluritid opercula (Gastropoda) from the Middle Ordovician of Siberia and Alaska

by Rohr, David M., Gubanov, A. P.
Published in Journal of Paleontology (1997)
“...Two occurrences of Middle Ordovician opercula belonging to the gastropod Maclurites are described...”

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5

Conodonts of the middle ordovician table head formation, Western Newfoundland

by van den Boogaard, M.
Published in Earth-Science Reviews (1986)

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6

MIDDLE ORDOVICIAN (WHITEROCKIAN) GASTROPODS OF WESTERN NEWFOUNDLAND: MACLURITOIDEA AND EUOMPHALOIDEA

by ROHR, DAVID M., MEASURES, E. A.
Published 2001

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7

Upper Lower-lower Middle Ordovician stratigraphy of North-East Greenland

by Stouge, S., Boyce, W.D., Christiansen, J., Harper, D.A.T., Knight, I.P.
Published 2002

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8

A VARIED MIDDLE ORDOVICIAN SPONGE SPICULE ASSEMBLAGE FROM WESTERN NEWFOUNDLAND

by ZHANG, XI-GUANG, PRATT, BRIAN R.
Published 2000

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9

An enigmatic fossil of sponge affinities from Middle Ordovician rocks of western Newfoundland

by Paquette, Jeanne, Stearn, Colin W., Klappa, Colin F.
Published in Canadian Journal of Earth Sciences (1983)

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10

Middle Ordovician graptolites from the Lawrence Harbour Formation, Central Newfoundland, Canada

by Williams, S. Henry
Published in Palaeontographica Abteilung A (1995)

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11

A cluster analysis interpretation of Middle Ordovician biofacies, southern Mackenzie Mountains

by Hayes, Brad J. R.
Published in Canadian Journal of Earth Sciences (1980)

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12

A varied Middle Ordovician sponge spicule assemblage from western Newfoundland

by Zhang, Xi-Guang, Pratt, Brian R.
Published in Journal of Paleontology (2000)
“..., spicule form in these Middle Ordovician specimens is similar overall to previously known assemblages...”

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13

Middle Ordovician (Whiterockian) trilobites from the Sunblood Formation, District of Mackenzie, Canada

by Tremblay, James V., Westrop, Stephen R.
Published in Journal of Paleontology (1991)
“...In the South Nahanni River area of the District of Mackenzie, the Middle Ordovician Sunblood...”

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14

Middle Ordovician Table Head Group of western Newfoundland: a revised stratigraphy

by Klappa, Colin F., Opalinski, Paul R., James, Noel P.
Published in Canadian Journal of Earth Sciences (1980)
“...Lithostratigraphic nomenclature of early Middle Ordovician strata from western Newfound land...”

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15

THE MIDDLE ORDOVICIAN PROVENTOCITUM PROCERULUM RADIOLARIAN ASSEMBLAGE OF SPITSBERGEN AND ITS BIOSTRATIGRAPHIC CORRELATION

by MALETZ, JÖRG, BRUTON, DAVID L.
Published in Palaeontology (2008)

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16

Conodont biostratigraphy in the Early to Middle Ordovician strata of the Oslobreen Group in Ny Friesland, Svalbard

by Lehnert, Oliver, Stouge, Svend, Brandl, Philipp A.
Published in Zeitschrift der Deutschen Gesellschaft für Geowissenschaften (2013)
“.... Collections of well-preserved conodonts (CAI 1) have been recovered from the Lower to lower Middle Ordovician...”

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17

Middle Ordovician Trilobites from Lower Head, Western Newfoundland. H. B. Whittington

by Rasetti, Franco
Published in The Quarterly Review of Biology (1964)

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18

Micro-CT study of Middle Ordovician Spumellaria (radiolarians) from western Newfoundland, Canada

by Kachovich, Sarah, Aitchison, Jonathan C.
Published in Journal of Paleontology (2020)
“...A new, previously undescribed Middle Ordovician (middle Darriwilian: Dw2) radiolarian assemblage...”

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19

The palaeobiogeographical spread of the acritarch Veryhachium in the Early and Middle Ordovician and its impact on biostratigraphical applications

by Servais, Thomas, Li, Jun, Molyneux, Stewart G., Rubinstein, Claudia V., Vecoli, Marco, Yan, Kui
Published in GFF (2014)

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20

Limestones of western Newfoundland that magnetized before Devonian folding but after Middle Ordovician lithification

by Hodych, Joseph P.
Published in Geophysical Research Letters (1989)
“... was acquired in the Middle Ordovician Table Head Group limestones of the Port au Port Peninsula of Newfoundland...”

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