EntityQ938452· pop 14· linked from 43 articlesPreston CloudSign in to saveAmerican earth scientist, biogeologist, cosmologist, and paleontologist (1912–1991)Listeners · Last.fmListeners1Total plays1 <a href="https://www.last.fm/music/Preston+Cloud">Read more on Last.fm</a>via Last.fm · Preston CloudConnectionsgeologic time scaleEntityUnited States Geological SurveyEntityCategories1912 births1991 deaths20th-century American geologistsAmerican paleontologistsCharles Doolittle Walcott Medal winnersDeaths from motor neuron disease in CaliforniaDeaths from pneumonia in CaliforniaGeorge Washington University alumniMembers of the American Philosophical SocietyMembers of the United States National Academy of SciencesPenrose Medal winners