the median pair of scutes in contact with the humeral, inframarginal and abdominal scutes of the plastron. Boulenger (1889) and Loveridge and Williams (1957) use "humeral" (for Dermatemydidae) for this scute, while Hutchison and Bramble (1981) use the term "anterior humeral"; see Scutes.

Alternative forms for pectoral scutes : pect, pectoral, pectoral scute, pectorals.