#polydactyly_in_stem-tetrapods
Polydactyly in stem-tetrapods
State of having more than five digits in ancient fish and tetrapods
Polydactyly in stem-tetrapods should here be understood as having more than five digits to the finger or foot, a condition that was the natural state of affairs in the earliest stegocephalians during the evolution of terrestriality. The polydactyly in these largely aquatic animals is not to be confused with polydactyly in the medical sense, i.e. it was not an anomaly in the sense it was not a congenital condition of having more than the typical number of digits for a given taxon. Rather, it appears to be a result of the early evolution from a limb with a fin rather than digits.
Fri 6th
Provided by Wikipedia
This keyword could refer to multiple things. Here are some suggestions: