William H. Twenhofel

1875 – 1957

• Invertebrate paleontology
• Principles of sedimentation
• Principles of invertebrate paleontology
• Treatise on sedimentation
• Faunal and sediment variation in the Anticosti sequence
• Geology and paleontology of the Mingan islands, Quebec
• Geology of Anticosti island
• Methods of study of sediments
• Mineralogical and physical composition of the sands of the Oregon coast from Coos Bay to the mouth of the Columbia River
• Origin of the black sands of the coast of southwest Oregon
• Physiography of Newfoundland
• Principles of invertebrate paleontology