The carpus (wrist) and tarsus (ankle) of land vertebrates primitively had three rows of carpal or tarsal bones.
Abbreviations: A, Scaphoid bone; B, Lunate bone; C, Triquetrum; D, Trapezium; E, Trapezoid; F, Capitatum; G, Hamatum; P, Pisiform; Cc, Central carpal; M, Metacarpal; (A-G, Cc, and P are Carpals).
From the classic German encyclopedia Meyers Konversations-Lexikon 1888.
Frog four limbs and human foot compared.
This anatomy article is a stub.