Occurrence of the alligatoroid genus Allognathosuchus in the Lower Oligocene
By: by Bryan Patterson -- ; Oliver Cummings Farrington -- , editor.
Contributors: Farrington, Oliver C. 1864-1933 editor
Series: Fieldiana -- v. 4, no. 6; Field Museum of Natural History. Publication -- 297. -- Geological series -- Vol. IV, no. 6; Publication (Field Museum of Natural History : 1909) -- 297.; Publication (Field Museum of Natural History : 1909) -- v. 4, no. 6
Publisher: Field Museum Press
Published: 1931
Place of publication: Chicago
Subjects: Paleontology -- Oligocene.; Paleontology -- South Dakota.