. Central Asiatic Expeditions of the American Museum of Natural History, under the leadership of Roy Chapman Andrews : preliminary contributions in geology, palaeontology, and zoology. Central Asiatic Expeditions (1921-1930); Scientific expeditions; Natural history; Scientific expeditions; Natural history. Fig. 5. Greatly enlarged (X3) anterior, exterior and interior aspects of a single tooth, which may belong in the maxillarj" series. species Protiguanodon mongoliense. When more fully known it may prove to belong to a distinct subfamily of the Iguanodontidae, for which the subfamil}'^ na
. Central Asiatic Expeditions of the American Museum of Natural History, under the leadership of Roy Chapman Andrews : preliminary contributions in geology, palaeontology, and zoology. Central Asiatic Expeditions (1921-1930); Scientific expeditions; Natural history; Scientific expeditions; Natural history. Fig. 5. Greatly enlarged (X3) anterior, exterior and interior aspects of a single tooth, which may belong in the maxillarj" series. species Protiguanodon mongoliense. When more fully known it may prove to belong to a distinct subfamily of the Iguanodontidae, for which the subfamil}'^ name Protiguanodontinae would be appropriate. The writer is of the opinion that this animal is distinct from the reptile above described, but Dr. W. K. Gregory, to whom the writer is deeply indebted for valuable notes and comparative observations, con- siders that it represents a juvenile stage of an animal similar to the very adult stage which constitutes the type of the genus Psittacosaurus. In favor of the view that the animals are the same are (1) close similarity in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Central Asiatic Expeditions (1921-1930); Andrews, Roy Chapman, 1884-1960; Matthew, William Diller, 1871-1930. [New York : American Museum of Natural History
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