The Ordovician graptolites of the Shelve District, Shropshire /

Palaeoecology and biostratigraphy of graptolites : proceedings of the 2nd International Conference of the Graptolite Working Group of the International Palaeontological Association, held at Cambridge University, 1-15 September, 1981 /
Published: (1986)

Graptolites from the Lower Ordovician Pogonip Group of western Utah /
by: Braithwaite, Lee F.
Published: (1976)

Graptolites of North America.
by: Ruedemann, Rudolf, 1864-1956
Published: (1947)

Type Graptolithina in Field Museum of Natural History /
by: Hansman, Robert H.
Published: (1979)

A monograph of British graptolites /
by: Elles, G. L. (Gertrude Lilian)

Llandoverian and Wenlockian graptolites from Bornholm /
by: Bjerreskov, Merete
Published: (1975)

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

Graptolites of New York /
by: Ruedemann, Rudolf, 1864-1956
Published: (1904)

Ordovician graptolites of the Basin Ranges in California, Nevada, Utah, and Idaho /
by: Ross, Reuben James, 1918-, et al.
Published: (1963)

Early Silurian graptolites from southeastern Alaska and their correlation with graptolitic sequences in North America and the Arctic /
by: Churkin, Michael, 1932-, et al.
Published: (1970)

Evolution of the Silurian and Devonian graptoloids /
by: Rickards, Barrie
Published: (1977)

Silurian and Devonian graptolites of central Nevada /
by: Berry, William B. N.
Published: (1975)

Ordovician and Silurian graptolite succession in the Trail Creek area, central Idaho -- a graptolite zone reference section /
by: Carter, Claire
Published: (1977)

Llandoverian graptolites of the North Canadian Cordillera : Petalograptus, Cephalograptus, Rhaphidograptus, Dimorphograptus, Retiolitidae, and Monograptidae /
by: Lenz, Alfred C., 1929-
Published: (1982)

Graptolite faunas of the Marathon region, West Texas /
by: Berry, William B. N.
Published: (1960)

Graptolite paleobiology /
by: Maletz, Jörg
Published: (2017)

Early Silurian graptolites from southeastern Alaska and their correlation with graptolitic sequences in North America and the Arctic /
by: Churkin, Michael, 1932-, et al.
Published: (1970)

Graptolithina /
by: Bulman, O. M. B.
Published: (1938)

Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas /
by: Dover, James H.
Published: (1980)

Ordovician Brachiopoda from the Shelve district Shropshire /
by: Williams, Alwyn
Published: (1974)

Stratigraphy, structure, and graptolites of an Ordovician and Silurian sequence in the Terra Cotta Mountains, Alaska Range, Alaska.
by: Churkin, Michael, 1932-
Published: (1996)

On the Cambro-Ordovician faunas of western Quruq tagh, eastern T'ien-shan /
by: Troedsson, Gustaf Timoteus, 1891-
Published: (1937)

Late Silurian and early Devonian graptolite, brachiopod, and coral faunas from northwestern and Arctic Canada /
by: Jackson, D. E. (Dennis Edward), 1932-
Published: (1978)

An account of the ordovician rocks of the Shelve Inlier in west Salop and part of north Powys /
by: Whittard, Walter Frederick, 1902-
Published: (1979)

Stratigraphy, structure, and graptolites of an Ordovician and Silurian sequence in the Terra Cotta Mountains, Alaska Range, Alaska /
by: Churkin, Michael, 1932-, et al.
Published: (1996)

Ordovician and Silurian Phi Kappa and Trail Creek Formations, Pioneer Mountains, central Idaho : stratigraphic and structural revisions, and new data on graptolite faunas /
by: Dover, James H., et al.
Published: (1980)

Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen district, south-west Wales /
by: Fortey, Richard A.
Published: (1978)

Ordovician Batophoreae (Dasycladales) from Michigan /
by: Nitecki, Matthew H.
Published: (1976)

Shorter contributions to paleontology and stratigraphy /
Published: (1989)

A global analysis of the Ordovician-Silurian boundary /
Published: (1988)

Phosphatic microfossils from the Ordovician of the United States /
by: Nitecki, Matthew H.
Published: (1975)

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

The Upper Ordovician fauna of Frobisher bay, Baffin Land /
by: Roy, Sharat Kumar, 1897-1962
Published: (1941)

Organic buildups in the Lower Ordovician (Canadian) of Texas and Oklahoma /
by: Toomey, Donald F.
Published: (1979)

Morphology and arrangement of meromes in Ischadites dixonensis, an Ordovician Receptaculitid /
by: Fisher, Daniel C.
Published: (1978)

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