. Breviora. . B. bone enamel dentine matrix in pulp cavity Figure I. Grocheria pattersoni, new species. Holotype, No. 68-VI-27-1. A, sketch and measurements of wear surface of P, approxi- mately X 6. B, sketch of posterior (intra-alveolar) exposure of paired lower incisors, approximately X 5. P is a large, strongly curved tooth with an alveolus extending posterodorsally far back in the facial region to above the infra- orbital foramen. It and I- are probably both hypselodont. The cross section is peculiar, with an oblique, long, slightly convex, buccal, enamel-covered face; a flat, ante
. Breviora. . B. bone enamel dentine matrix in pulp cavity Figure I. Grocheria pattersoni, new species. Holotype, No. 68-VI-27-1. A, sketch and measurements of wear surface of P, approxi- mately X 6. B, sketch of posterior (intra-alveolar) exposure of paired lower incisors, approximately X 5. P is a large, strongly curved tooth with an alveolus extending posterodorsally far back in the facial region to above the infra- orbital foramen. It and I- are probably both hypselodont. The cross section is peculiar, with an oblique, long, slightly convex, buccal, enamel-covered face; a flat, anteroposterior, enamelless, anteromedial face; and a likewise enamelless, concave, postero- medial face. The three faces meet at definite angles, approximately right angles at both ends of the anteromedial face but strongly acute between the buccal and posteromedial faces. (See Fig. lA.) The enamel is nearly smooth but with slight wavy longitudinal rib- bing. Right and left P are close to each other on their medial faces. I- is much smaller than P, measuring about mm across the buccal face as compared with about mm for P. I- is also enameled on the buccal face, and probably not elsewhere. The cross section cannot be clearly determined as the specimen is preserved. I- is less curved longitudinally than P and although. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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