Characteristic Lower Cretaceous megafossils from northern Alaska.

The Upper Cretaceous floras of Alaska /
by: Hollick, Charles Arthur, 1857-1933
Published: (1930)

Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states.
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1960)

Succession and speciation of the pelecypod Aucella /
by: Imlay, Ralph W. (Ralph Willard), 1908-1989
Published: (1959)

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)

The Lower Cretaceous ammonite Schloenbachia leonensis Conrad var. equidistans Cragin /
by: Cobban, William A., 1916-2015
Published: (1985)

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

New Upper Cretaceous Ostreidae from the Gulf region.
by: Stephenson, Lloyd William, 1876-1962
Published: (1936)

American upper cretaceous echinoidea.
by: Cooke, C. Wythe (Charles Wythe), 1887-1971
Published: (1953)

Foraminifera and stratigraphy of the upper part of the Pierre Shale and lower part of the Fox Hills Sandstone (Cretaceous) north-central South Dakota /
by: Mello, James F., 1936-
Published: (1969)

Contributions to Late Cretaceous stratigraphy and paleontology, western Montana.
Published: (1991)

The Upper Cretaceous ammonite Watinoceras Warren in the western interior of the United States /
by: Cobban, William A., 1916-2015
Published: (1988)

Owl Creek (Upper Cretaceous) fossils from Crowleys Ridge, Southeastern Missouri.
by: Stephenson, Lloyd William, 1876-1962
Published: (1955)

The ammonite Metengonoceras Hyatt, 1903, from the Mowry Shale (Cretaceous) of Montana and Wyoming /
by: Cobban, William A., 1916-2015
Published: (1989)

Upper Cretaceous gastropods from the Pierre Shale at Red Bird, Wyoming /
by: Sohl, Norman F. (Norman Frederick), 1924-
Published: (1967)

Foraminifera from the Pierre Shale (Upper Cretaceous) at Red Bird, Wyoming /
by: Mello, James F., 1936-
Published: (1971)

Studies of the Mowry shale (Cretaceous) and contemporary formations in the United States and Canada /
by: Reeside, John B. (John Bernard), 1889-1958, et al.
Published: (1960)

Late Paleozoic gastropoda from northern Alaska /
by: Yochelson, Ellis L. (Ellis Leon), 1928-2006
Published: (1960)

The late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States /
by: Cobban, William A., 1916-2015
Published: (1969)

Upper cretaceous foraminifera of the gulf coastal region of the United States and adjacent areas /
by: Cushman, Joseph A.
Published: (1946)

New Upper Cretaceous Amphineura (Mollusca) /
by: Smith, Allyn G., 1893-1976
Published: (1968)

Lower Cretaceous deposits in California and Oregon /
by: Anderson, Frank Marion, 1863-1945
Published: (1938)

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

The Late Cretaceous cephalopod Haresiceras Reeside and its possible origin /
by: Cobban, William A., 1916-2015
Published: (1964)

Ammonite faunas of the Sarten sandstone (Cretaceous), Luna County, New Mexico /
by: Cobban, William A., 1916-2015
Published: (1987)

Megafossil sample locality map, checklists, and stratigraphic sections of the Chignik and Sutwik Island quadrangles, Alaska /
by: Detterman, Robert L.
Published: (1981)

Cretaceous ammonites from the lower part of the Matanuska formation, southern Alaska /
by: Jones, David Lawrence, 1930-, et al.
Published: (1967)

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

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

Some Cretaceous echinoids from the Americas /
by: Cooke, C. Wythe (Charles Wythe), 1887-1971
Published: (1955)

Lower Cretaceous ammonites from North-east England : the Hauterivian genus Simbirskites.
by: Rawson, Peter Franklin
Published: (1971)

The Upper Cretaceous floras of Alaska /
by: Hollick, Charles Arthur, 1857-1933, et al.
Published: (1930)

Stratigraphy of the Niobrara formation at Pueblo, Colorado /
by: Scott, Glenn R., 1918-2012, et al.
Published: (1964)

Biostratigraphic correlation chart of some Upper Cretaceous rocks from the Lost Soldier area, Wyoming to west of Craig, Colorado /
Published: (1983)

Lituyapecten (new subgenus of Patinopecten) from Alaska and California /
by: MacNeil, Francis Sterns, 1909-
Published: (1961)

Lower Cretaceous ammonites from north-east England : the Hauterivian heteromorph Aegocrioceras /
by: Rawson, Peter Franklin
Published: (1975)