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AmmonoideaAmmonites from the Buchia zones in northwestern California and southwestern OregonRalph Willard Imlay

Ammonites from the Buchia zones in northwestern California and southwestern Oregon

Ralph Willard Imlay · U.S. Govt. Print. Off.

59 sayfa · 1970

Paleontology / Ammonoidea

AmmonoideaEarly Jurassic ammonites from AlaskaRalph Willard Imlay

Early Jurassic ammonites from Alaska

Ralph Willard Imlay · U.S. G.P.O.

49 sayfa · 1981

Paleontology / Ammonoidea

AmmonoideaEarly and middle Bajocian (middle Jurassic) ammonites from southern AlaskaRalph Willard Imlay

Early and middle Bajocian (middle Jurassic) ammonites from southern Alaska

Ralph Willard Imlay · U.S. G.P.O.

38 sayfa · 1985

Paleontology / Ammonoidea

AmmonoideaJurassic (Bathonian and Callovian) ammonites in eastern Oregon and western IdahoRalph Willard Imlay

Jurassic (Bathonian and Callovian) ammonites in eastern Oregon and western Idaho

Ralph Willard Imlay · U.S. Govt. Print. Off.

24 sayfa · 1981

Paleontology / Ammonoidea

AmmonoideaJurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United StatesRalph Willard Imlay

Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States

Ralph Willard Imlay · U.S. G.P.O.

44 sayfa · 1982

Paleontology / Ammonoidea

Stratigraphic GeologyJurassic paleobiogeography of AlaskaRalph Willard Imlay

Jurassic paleobiogeography of Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

34 sayfa · 1973

Geology / Geology, Stratigraphic / Paleobiogeography / Paleontology / Stratigraphic Geology

Stratigraphic GeologyJurassic paleobiogeography of the conterminous United States in its continental settingRalph Willard Imlay

Jurassic paleobiogeography of the conterminous United States in its continental setting

Ralph Willard Imlay · for sale by the Supt. of Docs.

134 sayfa · 1980

Geology / Geology, Stratigraphic / Paleogeography / Paleontology / Stratigraphic Geology

AmmonoideaLate Bajocian ammonites from southern AlaskaRalph Willard Imlay

Late Bajocian ammonites from southern Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

19 sayfa · 1982

Paleontology / Ammonoidea

AmmonoideaLate Bajocian ammonites from the Cook Inlet region, AlaskaRalph Willard Imlay

Late Bajocian ammonites from the Cook Inlet region, Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

15 sayfa · 1962

Paleontology / Ammonoidea

AmmonoideaLate Jurassic ammonites from AlaskaRalph Willard Imlay

Late Jurassic ammonites from Alaska

Ralph Willard Imlay · U.S. G.P.O.

40 sayfa · 1981

Paleontology / Ammonoidea

Fossil BivalvesMarine Jurassic pelecypods from central and southern UtahRalph Willard Imlay

Marine Jurassic pelecypods from central and southern Utah

Ralph Willard Imlay · U.S. Govt. Print. Off.

42 sayfa · 1964

Bivalvia, Fossil / Fossil Bivalvia / Paleontology / Fossil Bivalves

LupherellaThe Mesozoic pelecypods Otapiria Marwick and Lupherella Imlay, new genus, in the United StatesRalph Willard Imlay

The Mesozoic pelecypods Otapiria Marwick and Lupherella Imlay, new genus, in the United States

Ralph Willard Imlay · U.S. Govt. Print. Off.

11 sayfa · 1967

Paleontology / Otapiria / Lupherella

PaléontologieMiddle Jurassic (Bajocian) ammonites from eastern OregonRalph Willard Imlay

Middle Jurassic (Bajocian) ammonites from eastern Oregon

Ralph Willard Imlay · U.S. Govt. Print. Off.

100 sayfa · 1973

Paleontology / Ammonoidea / Paléontologie

Bathonian seriesMiddle Jurassic (Bajocian and Bathonian) ammonites from northern AlaskaRalph Willard Imlay

Middle Jurassic (Bajocian and Bathonian) ammonites from northern Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

22 sayfa · 1976

Paleontology / Ammonoidea / Paleontologic correlation / Cephalopod / Bathonian series

AmmonoideaMiddle Jurassic (Bathonian) ammonites from southern AlaskaRalph Willard Imlay

Middle Jurassic (Bathonian) ammonites from southern Alaska

Ralph Willard Imlay · u.S. Govt. Print. OFf : for sale by the Supt. of Docs., GPO

42 sayfa · 1980

Paleontology / Ammonoidea

AmmonoideaSome Jurassic ammonites from central Saudi ArabiaRalph Willard Imlay

Some Jurassic ammonites from central Saudi Arabia

Ralph Willard Imlay · U.S. Govt. Print. Off.

17 sayfa · 1970

Paleontology / Ammonoidea

Stratigraphic GeologyStratigraphic distribution and zonation of Jurassic (Callovian) ammonites in southern AlaskaRalph Willard Imlay

Stratigraphic distribution and zonation of Jurassic (Callovian) ammonites in southern Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

28 sayfa · 1975

Ammonoidea / Geology / Geology, Stratigraphic / Stratigraphic Geology

Fossil BivalvesSuccession and speciation of the pelecypod AucellaRalph Willard Imlay

Succession and speciation of the pelecypod Aucella

Ralph Willard Imlay · U.S. Govt. Print. Off.

169 sayfa · 1959

Paleontology / Buchia / Fossil Bivalves

Stratigraphic GeologyTwin Creek limestone (Jurassic) in the western interior of the United StateRalph Willard Imlay

Twin Creek limestone (Jurassic) in the western interior of the United State

Ralph Willard Imlay · U.S. Govt. Print. Off.

105 sayfa · 1967

Geology / Geology, Stratigraphic / Paleontology / Stratigraphic Geology

AmmonoideaUpper Jurassic mollusks from eastern Oregon and western IdahoRalph Willard Imlay

Upper Jurassic mollusks from eastern Oregon and western Idaho

Ralph Willard Imlay · U.S. Govt. Print. Off.

21 sayfa · 1964

Paleontology / Ammonoidea

PaleontologyCharacteristic Lower Cretaceous megafossils from northern AlaskaRalph Willard Imlay

Characteristic Lower Cretaceous megafossils from northern Alaska

Ralph Willard Imlay · U.S. Government Printing Office

74 sayfa · 1961

Paleontology

Stratigraphic GeologyEarly Cretaceous (Albian) ammonites from the Chitina Valley and Talkeetna Mountains, AlaskaRalph Willard Imlay

Early Cretaceous (Albian) ammonites from the Chitina Valley and Talkeetna Mountains, Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

114 sayfa · 1960

Ammonoidea / Geology, Stratigraphic / Paleontology / Stratigraphic Geology

Stratigraphic GeologyJurassic (Bathonian or early Callovian) ammonites from Alaska and MontanaRalph Willard Imlay

Jurassic (Bathonian or early Callovian) ammonites from Alaska and Montana

Ralph Willard Imlay · U.S. Government Printing Office

32 sayfa · 1962

Ammonoidea / Geology, Stratigraphic / Stratigraphic Geology

AmmonoideaMiddle Bajocian ammonites from the Cook Inlet region, AlaskaRalph Willard Imlay

Middle Bajocian ammonites from the Cook Inlet region, Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

61 sayfa · 1964

Paleontology / Ammonoidea

Stratigraphic GeologyCharacteristic marine Jurassic fossils from the western interior of the United StatesRalph Willard Imlay

Characteristic marine Jurassic fossils from the western interior of the United States

Ralph Willard Imlay · U.S. Government Printing Office

35 sayfa · 1948

Ammonoidea / Geology, Stratigraphic / Paleontology / Stratigraphic Geology

Stratigraphic GeologyEarly cretaceous (Albanian) ammonites from the Chitina Valley and Talkeetna Mountains, AlaskaRalph Willard Imlay

Early cretaceous (Albanian) ammonites from the Chitina Valley and Talkeetna Mountains, Alaska

Ralph Willard Imlay · U.S. Government Printing Office

114 sayfa · 1960

Ammonoidea / Geology, Stratigraphic / Stratigraphic Geology

AmmonoideaLower Jurassic (Pliensbachian and Toarcian) ammonites from eastern Oregon and CaliforniaRalph Willard Imlay

Lower Jurassic (Pliensbachian and Toarcian) ammonites from eastern Oregon and California

Ralph Willard Imlay · U.S. Govt. Print. Off.

51 sayfa · 1968

Paleontology / Ammonoidea

AmmonoideaLate Jurassic ammonites from the western Sierra Nevada, CaliforniaRalph Willard Imlay

Late Jurassic ammonites from the western Sierra Nevada, California

Ralph Willard Imlay · U.S. Government Printing Office

30 sayfa · 1961

Paleontology / Ammonoidea

PaleontologyCallovian (Jurassic) ammonites from the United States and AlaskaRalph Willard Imlay

Callovian (Jurassic) ammonites from the United States and Alaska

Ralph Willard Imlay · U.S. Govt. Print. Off.

112 sayfa · 1953

Ammonoidea / Cephalopoda, Fossil / Fossil Cephalopoda / Paleontology

GeologyJurassic-Cretaceous biochronology and paleogeography of North AmericaRalph Willard Imlay, Gerd Ernst Gerold Westermann

Jurassic-Cretaceous biochronology and paleogeography of North America

Ralph Willard Imlay, Gerd Ernst Gerold Westermann · Geological Association of Canada, Dept. of Geology, Memorial University of Newfoundland

315 sayfa · 1984

Stratigraphic Geology / Paleontology / Congresses / Paleogeography / Geology