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Fig. 5. A series of four X-ray photographs showing variations and duplications of the pollex (I.) in the manus of the pig

A, a manus in which the pollex is represented by an abnormally large digit of three phalanges;

B, the phalanges of the extra digit are duplicated:

C, all the bones of the extra digit are duplicated, but both sets of phalanges are enclosed within a single hoof;

D, two extra digits are present, articulating with a single trapezium (trz.).

fig 1 | fig 2 | fig 3 | fig 4 | fig 5 | fig 6 | fig 7

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Prentiss CW. Extra digits and digital reductions. (1906) Popular Science Monthly. 336-448.

Cite this page: Hill, M.A. (2024, February 24) Embryology Prentiss1906 fig05.jpg. Retrieved from

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