Abstract
DR. G. T. ASHLEY'S communication1 prompts me to record a further example of supra-sternal ossicles in primates, this time in Perodicticus potto. The specimen, which was the prepared skeleton of a young animal, showed a supra-sternal ossicle on the right side only, contributing to the articular surface for the clavicle (Fig. 1). The ossicle on the left side was presumably lost during preparation. From a comparison with the adult sternum, it would appear, that in Perodicticus the supra-sternal ossicles are responsible for the prominent antero-lateral angles of the manubrium sterni and thus for the deep supra-sternal notch. It is possible that they are a regular feature in the development of the sternum in this animal. It must not be forgotten, however, that the supra-sternal notch in man is considerably shallower in the newborn than in the adult, though supra-sternal ossicles do not seem to be a constant feature here.
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Nature, 176, 608 (1955).
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DAVIES, D. Supra-Sternal Ossicles in Primates other than Man. Nature 176, 1130 (1955). https://doi.org/10.1038/1761130a0
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DOI: https://doi.org/10.1038/1761130a0
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