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ordovician
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The Ordovician trilobites of the Shelve Inlier, west Shropshire
The Ordovician trilobites of the Shelve Inlier, west Shropshire
By W. F. Whittard
The great Ordovician biodiversification event
By Florentin Paris
On the primordial fauna and the Taconic system
By Joachim Barrande
Ordovician paleontology of the northern Hudson Bay lowland
By Samuel J. Nelson
Bibliographic index of American Ordovician and Silurian fossils ..
By Ray S. Bassler
The Ordovician system in Canada
The Ordovician system in Canada
By Christopher R. Barnes
Ostracoda of the upper Clays Ferry, Kope, and lower Fairview Formations (Middle and Upper Ordovician) at Moffett Road, northern Kentucky
Ostracoda of the upper Clays Ferry, Kope, and lower Fairview Formations (Middle and Upper Ordovician) at Moffett Road, northern Kentucky
By Jean Milton Berdan
Silicified Upper Ordovician--Lower Silurian ostracodes from the Avalanche Lake area, southwestern District of Mackenzie
Silicified Upper Ordovician--Lower Silurian ostracodes from the Avalanche Lake area, southwestern District of Mackenzie
By M. J. Copeland
A monograph of the Ordovician trilobites of the Bala area, Merioneth
By H. B. Whittington
Brachiopods from the upper Ardmillan succession (Ordovician) of the Girvan Distict, Scotland
Brachiopods from the upper Ardmillan succession (Ordovician) of the Girvan Distict, Scotland
By D. A. T. Harper
The Ordovician trilobite Hadrohybus Raymond 1925, and its family relationships (Postilla)
The Ordovician trilobite Hadrohybus Raymond 1925, and its family relationships (Postilla)
By Richard A. Fortey
Silicified Middle Ordovician trilobites
By H. B. Whittington
Figures and Descriptions of Canadian Organic Remains
Figures and Descriptions of Canadian Organic Remains
By Geological Survey of Canada.
A study of the James types of Ordovician and Silurian Bryozoa
A study of the James types of Ordovician and Silurian Bryozoa
By Ray S. Bassler
Biostratigrafii︠a︡ i trilobity verkhnego kembrii︠a︡ i nizhnego ordovika severo-zapada Sibirskoĭ platformy
Biostratigrafii︠a︡ i trilobity verkhnego kembrii︠a︡ i nizhnego ordovika severo-zapada Sibirskoĭ platformy
By A. V. Rozova
Silicified Middle Ordovician trilobites
By H. B. Whittington
The Ordovician system in most of Russian Asia
The Ordovician system in most of Russian Asia
By Reuben James Ross,John A. Talent
The Taconic and Lower Silurian rocks of Vermont and Canada
The Taconic and Lower Silurian rocks of Vermont and Canada
By Marcou, Jules
Ordovician and Silurian faunas from Arctic Canada
Ordovician and Silurian faunas from Arctic Canada
By Curt Teichert
Morphology, taxonomy, and evolution of the bryozoan constellaria from the Cincinnati arch
Morphology, taxonomy, and evolution of the bryozoan constellaria from the Cincinnati arch
By John F. Cutler
The Ordovician trilobite faunas of the Builth-Llandrindod inlier, central Wales
The Ordovician trilobite faunas of the Builth-Llandrindod inlier, central Wales
By C. P. Hughes
An analytical key to the fossils of the vicinity of Richmond, Ind
By David Worth Dennis
Sequence, cycle and event stratigraphy of Upper Ordovician and Silurian strata of the Cincinnati Arch region
Sequence, cycle and event stratigraphy of Upper Ordovician and Silurian strata of the Cincinnati Arch region
By Carlton E. Brett