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- n. Plural form of carpometacarpus.
Sorry, no etymologies found.
Heavy-bodied and robust compared to other ducks, they have tough skin, a massive head and neck, and are equipped with keratanised orange knobs on the proximal parts of their carpometacarpi.
In contrast to those of most other neornithines, the carpometacarpi of cariamaens and hoatzins possess a particularly broad, strongly bowed third metacarpal.
Rather more remarkable is the fact that birds belonging to several distinct lineages have evolved entirely new structures - namely, bony spurs, knobs and clubs - on their wrists, arm bones or carpometacarpi.