. Athlon : essays on palaeontology in honour of Loris Shano Russell. Paleontology. C. Fig. 2 a-b Penetrigonias hudsoni, gen. et sp. nov., holotype, unsm 62049, left P2"4. Scale 20 mm. a. Buccal view. b. Crown view. C. Hyrachyus sp., unsm 62099, left P2~4, crown 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 Churcher, C. S. , 1928-; Russell, Loris Shano, 1904-; Royal Ontario Museum. Toronto : ROM

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Keywords: ., book, bookcentury1900, bookleafnumber226, booksubjectpaleontology