Trachytherus, a typotherid from the Deseado beds of Patagonia Patterson, Bryan, 1909-1979 creator text book Chicago Field Museum of Natural History 1934 1934
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ENG Caption title. "December 31, 1934." 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-). 1922-24 Captain Marshall Field paleontological expeditions Paleontology Patagonia (Argentina and Chile) QE1 .F4 vol. 6, no. 8 Publication (Field Museum of Natural History : 1909), 334 Publication (Field Museum of Natural History : 1909), Geological series, v. 6, no. 8 https://www.biodiversitylibrary.org/bibliography/42259 https://www.biodiversitylibrary.org/bibliography/5226 3874893 38000180 10.5962/bhl.title.5226 DLC