. The Canadian field-naturalist. 122 The Canadian Field-Naturalist [Vol. XXXVI Considerable interest is attached to the finding of two Desmostyliis teeth in the Sooke formation, both of which were collected in the cliffs between Muir and Kirby creeks. The first one was found in 1916, and is now in the Provincial Museum at Victoria. It was determined by the late Lawrence M. Lambe, of the Canadian Geological Survey, as the first right upper molar of the Sirenian Desmostylus hesverus Marsh, of Pliocene age.' The tooth is considerably worn, and the root is missing. It is composed of two longi
. The Canadian field-naturalist. 122 The Canadian Field-Naturalist [Vol. XXXVI Considerable interest is attached to the finding of two Desmostyliis teeth in the Sooke formation, both of which were collected in the cliffs between Muir and Kirby creeks. The first one was found in 1916, and is now in the Provincial Museum at Victoria. It was determined by the late Lawrence M. Lambe, of the Canadian Geological Survey, as the first right upper molar of the Sirenian Desmostylus hesverus Marsh, of Pliocene age.' The tooth is considerably worn, and the root is missing. It is composed of two longitudinal is larger and not so much worn. The length of this tooth is 46 mm.; width: 34 mm.; diameter of largest column: 24mm.; diameter of smallest column: 17 mm.* The root of this tooth is also missing, and the end column broken. The main difference between these teeth and the American and Japanese specimens is that each of the Sooke teeth has a well developed cingulum. There can be little doubt that these teeth represent an older species than Desmostylus hesperus, as recent re- search has shown that this formation is Oligocene. A. 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, The Ottawa-Field-Naturalists Club
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