Definition of tarsometatarsus in US English:


nounPlural tarsometatarsi

  • A long bone in the lower leg of birds and some reptiles, formed by fusion of tarsal and metatarsal structures.

    • ‘Increased robusticity of owl bones could be seen in the general shape of the tarsometatarsus and its articulation with the tibiotarsus and the phalanges.’
    • ‘At present, the oldest reliable fossil from this family is a tarsometatarsus that was found in Colorado, dating back to the Paleocene epoch.’
    • ‘Two bird tarsometatarsi, one from a green-backed heron and another a turkey, were also interred with the human remains at Brandon.’
    • ‘However, no significant covariation was observed between length of the tarsometatarsus, an index of skeletal body size, or intensity of T-cell-mediated immune response and sonographic features of begging calls.’
    • ‘With accumulation of more fossil material, it may also be possible to assign other skeletal elements to the tarsometatarsi, which may provide additional clues on the phylogenetic position of these fossil songbirds.’