What is "tibiotarsus"

Tibiotarsus \Tib`i*o*tar"sus\, n.; pl. Tibiotarsi. (Anat.) The large bone between the femur and tarsometatarsus in the leg of a bird. It is formed by the union of the proximal part of the tarsus with the tibia.

n. (context anatomy English) The large bone between the femur and tarsometatarsus in the leg of a bird, formed by the union of the proximal part of the tarsus with the tibia.

The tibiotarsus is the large bone between the femur and the tarsometatarsus in the leg of a bird. It is the fusion of the proximal part of the tarsus with the tibia.

A similar structure also occurred in the Mesozoic Heterodontosauridae. These small ornithischian dinosaurs were unrelated to birds and the similarity of their foot bones is best explained by convergent evolution.