Phalangeal Formula

Phalangeal formula is a way of comparing animals by the number of phalanges that they have in each of their digits.  It can be used to study phylogeny or to predict how an animal may use its hands and feet.  An animal's phalangeal formula is simply given as a series of numbers.  Plantigrades, digitigrades, and unguligrades are all associated with different numbers of digits as well as different phalangeal formulas.

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