Ralph W. Imlay

1908 – 1989

• Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states
• Callovian (Jurassic) ammonites from the United States and Alaska
• Characteristic Jurassic mollusks from northern Alask
• Characteristic Jurassic mollusks from northern Alaska
• Characteristic Lower Cretaceous megafossils from northern Alaska
• Characteristic marine Jurassic fossils from the western interior of the United States
• Early Cretaceous (Albian) ammonites from the Chitina Valley and Talkeetna Mountains, Alaska
• Geology of the Sierra de Cruillas, Tamaulipas, Mexico
• Gypidula petoskeyensis, sp. nov., a new brachiopod from the Traverse group of Michigan
• Jurassic (Bathonian and Callovian) ammonites in eastern Oregon and western Idaho
• Jurassic (Bathonian or early Callovian) ammonites from Alaska and Montana
• Jurassic paleobiogeography of the conterminous United States in its continental setting