Some Jurassic ammonites from central Saudi Arabia /

Jurassic (Bathonian and Callovian) ammonites in eastern Oregon and western Idaho /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1980)

Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1982)

Late Bajocian ammonites from southern Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1982)

Middle Jurassic (Bajocian) ammonites from eastern Oregon /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1973)

Jurassic brachiopods of Saudi Arabia /
by: Cooper, G. Arthur (Gustav Arthur), 1902-2000
Published: (1989)

Late Jurassic ammonites from Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1981)

Middle Jurassic (Bajocian and Bathonian) ammonites from northern Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989

Die degenerierten perisphinctiden des kimmeridge von Le Havre /
by: Tornquist, Alexander Johannes Heinrich, 1868-
Published: (1896)

Lower Jurassic (Pliensbachian and Toarcian) ammonites from eastern Oregon and California /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1968)

Late Jurassic ammonites from the western Sierra Nevada, California /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1961)

Callovian (Jurassic) ammonites from the United States and Alaska. : Descriptions and illustrations of cephalopods of Late Jurassic age.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1953)

The Cretaceous ammonites of Venezuela /
by: Renz, Otto, 1906-
Published: (1982)

Ammonites from the Buchia zones in northwestern California and southwestern Oregon /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989, et al.
Published: (1970)

Cenomanian ammonites from Southern England /
by: Kennedy, W. J. (William James)
Published: (1971)

Campanian and Maastrichtian ammonites from Northern Aquitaine, France /
by: Kennedy, W. J. (William James), 1943-
Published: (1986)

Early Triassic (Smithian) ammonites of paleoequatorial affinity from the Chulitna terrane, south-central Alaska /
by: Nichols, K. M. (Kathryn Marion), 1946-
Published: (1979)

Uber Ammonites Pedernalis v. Buch /
by: Bohm, Johannes, 1857-
Published: (1898)

Sur quelques ammonites du cretace algerien /
by: Pervinquière, Léon, 1873-1913
Published: (1910)

Contribucion al conocimiento sobre algunos Ammonites del Peru /
by: Lisson, Carlos Ismael, 1868-
Published: (1908)

Callovian (Jurassic) ammonites from the United States and Alaska.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1953)

Middle Bajocian ammonites from the Cook Inlet region, Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1964)

Late Bajocian ammonites from the Cook Inlet region, Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1962)

A monograph of British Belemnitid: Jurassic /
by: Phillips, John, 1800-1874

Callovian (Jurassic) ammonites from the United States and Alaska.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1953)

Mid-Cretaceous (Turonian) ammonite fauna from Fence Lake area of west-central New Mexico /
by: Cobban, William A., 1916-2015
Published: (1983)

New and little-known ammonites from the Upper Cretaceous (Cenomanian and Turonian) of the western interior of the United States /
by: Cobban, William A., 1916-2015
Published: (1971)

Late Jurassic ammonites from the western Sierra Nevada, California /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1961)

Late Jurassic ammonites from Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1981)

Early Jurassic ammonites from Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989

Stratigraphy of the Jurassic and Lower Cretaceous rocks and Jurassic ammonites from northern areas of West Pakistan.
by: Fatmi, Ali Nasir
Published: (1972)

Characteristic marine Jurassic fossils from the western interior of the United States.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1948)

Ammonites from the Navesink Formation at Atlantic Highlands, New Jersey /
by: Cobban, William A., 1916-2015
Published: (1974)

Upper Cretaceous rocks and ammonite faunas of southwestern New Mexico /
by: Cobban, William A., 1916-2015
Published: (1989)

Texas Cretaceous ammonites and nautiloids /
Published: (1994)

Jurassic (Bathonian and Callovian) ammonites in eastern Oregon and western Idaho /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1981)

Middle Jurassic (Bathonian) ammonites from southern Alaska /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1980)