New crocodilians from the Upper Paleocene of western Colorado Schmidt, Karl Patterson, 1890-1957 creator text book Chicago Field Museum of Natural History 1938 1938
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ENG Caption title. "August 30, 1938." Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-). Colorado Crocodiles, Fossil Paleontology Tertiary QE1 .F4 vol. 6, no. 21 Publication (Field Museum of Natural History : 1909), 421 Publication (Field Museum of Natural History : 1909), Geological series, v. 6, no. 21 https://www.biodiversitylibrary.org/bibliography/42259 https://www.biodiversitylibrary.org/bibliography/5216 3889644 39000023 10.5962/bhl.title.5216 DLC