The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky : a taxonomic study of nine species and their stratigraphic distribution in the Lexington limestone and younger Ordovician rocks /

Ordovician Rhynchonelliformean Brachiopods from Co. Waterford, SE Ireland : Palaeobiogeography of the Leinster Terrane.
by: Liljeroth, Maria
Published: (2017)

Some silicified Middle Ordovician brachiopods from Kentucky /
by: Neuman, Robert B., 1920-
Published: (1967)

Upper Jurassic rhynchonellid brachiopods from Northwestern Europe.
by: Childs, Alan
Published: (1969)

Early Triassic terebratulid brachiopods from the western interior of the United States /
by: Hoover, Peter R.
Published: (1979)

Articulate brachiopods of the Viola Formation (Ordovician) in the Arbuckle Mountains, Oklahoma /
by: Alberstadt, Leonard P.
Published: (1973)

Ordovician brachiopods, trilobites, and stratigraphy in eastern and central Nevada.
by: Ross, Reuben James, 1918-
Published: (1970)

Brachiopods from the upper part of the Garden City Formation (Ordovician) north-central Utah.
by: Ross, Reuben James, 1918-
Published: (1968)

Ordovician trilobites of Argentina /
by: Harrington, Horacio Jaime, 1910-
Published: (1957)

Late Ordovician and early Silurian articulate brachiopods from Oklahoma, southwestern Illinois, and eastern Missouri /
by: Amsden, Thomas William
Published: (1974)

The Cambrian-Ordovician boundary : sections, fossil distributions, and correlations /
Published: (1982)

The Ordovician trilobites of Spitsbergen /
by: Fortey, Richard A.
Published: (1974)

Trepostome and cystoporate bryozoans from the Lexington limestone and the Clays Ferry formation (Middle-Upper Ordovician) of Kentucky /
by: Karklins, Olgerts L., 1924-
Published: (1984)

Catalog of fossils from the Middle and Upper Ordovician of Oklahoma.
by: Amsden, Thomas William
Published: (1957)

The Lower Ordovician gastropod Ceratopea /
by: Yochelson, Ellis L. (Ellis Leon), 1928-2006, et al.
Published: (1957)

Silicified Middle Ordovician trilobites /
by: Whittington, H. B. (Harry Blackmore)
Published: (1953)

The great Ordovician biodiversification event /
Published: (2004)

Aspects of the Ordovician system /
Published: (1984)

The Middle and Upper Ordovician conodont faunas of Minnesota /
by: Webers, Gerald F., 1932-
Published: (1966)

Review of Ordovician pelecypods.
by: Pojeta, John, Jr
Published: (1971)

The Middle and Upper Ordovician rocks of Michigan.
by: Hussey, Russell C. (Russell Claudius), 1888-
Published: (1952)

Conodont evolution and biostratigraphy of the Upper Cambrian and lowest Ordovician /
by: Miller, James Frederick, 1943-
Published: (1971)

Ordovician paleontology of the northern Hudson Bay lowland.
by: Nelson, Samuel J.
Published: (1963)

Upper Bromide Formation and Viola Group (Middle and Upper Ordovician) in eastern Oklahoma.
Published: (1983)

A monograph of the British Ordovician and Silurian Bellerophontacea /
by: Reed, F. R. C. (Frederick Richard Cowper), 1869-

Ordovician streptelasmid rugose corals from Michigan.
by: Stumm, Erwin Charles, 1908-1969
Published: (1963)

Notes on two Ordovician ostracods from Estonia /
by: Kesling, Robert V. (Robert Vernon), 1917-2005
Published: (1955)

The Ordovician trilobite faunas of the Builth-Llandrindod inlier, central Wales /
by: Hughes, C. P.

Preliminary studies of the ultrastructure of selected Ordovician conodonts /
by: Barnes, Christopher R.
Published: (1970)

Lower Ordovician trilobites from western Utah and eastern Nevada.
by: Hintze, Lehi F.
Published: (1952)

Teiichispira, a new early Ordovician gastropod genus /
by: Yochelson, Ellis L. (Ellis Leon), 1928-2006, et al.
Published: (1968)

Lower Ordovician Brachiopoda from mid and southwest Wales /
by: Lockley, M. G.
Published: (1981)

Middle and Late Ordovician solitary rugose corals of the Cincinnati Arch region /
by: Elias, Robert J.
Published: (1983)

Contributions to the Ordovician paleontology of Kentucky and nearby states /
Published: (1979)

Some Middle Ordovician brachiopods and trilobites from the basin ranges, Western United States. : With stratigraphic sections A, north of Pyramid Peak, Calif. /
by: Ross, Reuben James, 1918-
Published: (1967)

Lower Ordovician Brachiopoda from the Tourmakeady Limestone, Co. Mayo, Ireland /
by: Williams, Alwyn
Published: (1985)

Brakhiopody silura i rannego devona evropeĭskoĭ chasti SSSR : otri︠a︡d Athyridida /
by: Modzalevskai͡a, T. L.
Published: (1985)