. The Canadian field-naturalist. Natural history. THE OTTAWA NATURALIST VOL. XXIV. PLATE PARIETAL CREST OF CENTROSAURUS APERTUS. (One-Sixth Nat. size.). 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 Ottawa Field-Naturalists' Club. Ottawa

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Keywords: ., bookauthorottawa, bookpublisherottawa, booksubjectnaturalhistory