Torthaí Cuardaigh

1

Trilobites from the Survey Peak, Outram, and Skoki formations (Upper Cambrian-Lower Ordovician) at Wilcox Pass, Jasper National Park, Alberta /

le Dean, William Thornton
[Ottawa? Canada] : Energy, Mines and Resources Canada, 1989

Leabhar

2

The Ordovician system in Australia, New Zealand and Antarctica : correlation chart and explanatory notes /

Paris : International Union of Geological Sciences, 1981

Leabhar

3

Stratigraphic and paleogeographic significance of an upper Ordovician acritarch flora from the Maquoketa Shale, northeastern Missouri, U.S.A. /

le Wicander, Reed, 1946-
Lawrence, Kan. : The Paleontological Society : Allen Press, 1999

Leabhar

4

The Ordovician system in China : correlation chart and explanatory notes /

le Sheng, Shen-Fu
Ottawa : International Union of Geological Sciences, 1980

Leabhar

5

Silicified Upper Ordovician--Lower Silurian ostracodes from the Avalanche Lake area, southwestern District of Mackenzie /

le Copeland, M. J. (Murray John), 1928-
Ottawa, Canada : Energy, Mines and Resources Canada, 1989

Leabhar

6

The Ordovician system in Canada : correlation chart and explanatory text/

le Barnes, Christopher R.
Ottawa : International Union of Geological Sciences, 1981

Leabhar

7

Protopanderodus (Conodontata) from the Ordovician Road River Group northern Yukon Territory and the evolution of the genus /

le McCracken, Alexander D.
[Ottawa, Ont.] : Energy, Mines, and Resources Canada, 1989

Leabhar

8

Middle Ordovician echinoderms from northern Illinois and southern Wisconsin /

le Kolata, Dennis R.
[Tulsa, Okla.] : Paleontological Society, 1975

Leabhar

9

Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas /

le Ross, Reuben James, 1918-
New Haven, Conn. : The Peobody Museum of Natural History, Yale University, 1951

Leabhar

10

Stratigraphy of Lower Ordovician Stonehenge and Larke formations in central Pennsylvania /

le Donaldson, Alan Chase
[University Park, Pa.] : [Pennsylvania State University], 1959

Thesis Leabhar

11

The Paxton Group of southeastern New England /

le Barosh, Patrick J. (Patrick James), 1936-
Washington, D.C. : Denver, CO : U.S. G.P.O. ; For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1989

Government Document Leabhar

12

Ordovician Rhynchonelliformean Brachiopods from Co. Waterford, SE Ireland : Palaeobiogeography of the Leinster Terrane /

le Liljeroth, Maria
Chichester, West Sussex : John Wiley & Sons, Incorporated, 2017

Leabhar

13

The morphology and taxonomy of the Halysitidae /

le Buehler, Edward J.
New Haven, Connecticut : The Peabody Museum of Natural History, Yale University, 1955

Thesis Leabhar

14

Stratigraphy of the Lower Ordovician Axemann Limestone of central Pennsylvania,

le Lees, John A.
Harrisburg, [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1967

Leabhar

15

Ultrastructural studies on graptolites

le Urbanek, Adam, Towe, Kenneth M.
Washington, Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1974

Government Document Leabhar

16

Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho--a graptolite zone reference section /

le Carter, Claire
Washington : U.S. Govt. Print. Off., 1977

Leabhar

17

Lithostratigraphy of the Middle Ordovician Salona and Coburn formations in central Pennsylvania.

le Thompson, Richard Rogers
Harrisburg, [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey] 1963

Leabhar

18

Fossils in Ordovician tuffs, northeastern Maine /

le Neuman, Robert B., 1920-
Washington : U.S. Govt. Print. Off., 1964

Leabhar

19

Stratigraphy of the Cambrian to Middle Ordovician rocks of central and western Pennsylvania,

le Wagner, Walter Richard, 1928-1974
Harrisburg [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1966

Leabhar

20

Some silicified Middle Ordovician brachiopods from Kentucky,

le Neuman, Robert B., 1920-
Washington, U.S. Govt. Print. Off., 1967

Government Document Leabhar

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