This would evade the great difficulties which have beset those who have endeavored to establish the homologies of the elements of the pentadactyle limb with those of any type of fully formed fin.
Also on this view, the pentadactyle limb and the swimming-fin would probably be evolved independently from a simple form of limb.
Finally, the purely pentadactyle Andre was the father of many children, not one of whom departed from the normal parental type.
The arrangement of these bones, peculiar and often complicated, but everywhere essentially the same in all the Tetrapoda, is a striking evidence that man is a descendant from the oldest pentadactyle Amphibia of the Carboniferous period.
In man the pentadactyle type has been better preserved by constant heredity than in many other Mammalia, notably the Ungulata.
The limbs are modified into pentadactyle hands and feet of the arboreal type, and are protected by nails.
The Stegocephali are the earliest Tetrapoda, the archipterygial paired fins having been transformed into the pentadactylefore and hind limbs, which are so characteristic of all the higher Vertebrata.
This transitional group of Dipnoi, 'fishes with lungs' but without pentadactyle limbs, is the morphological bridge which joins the Ganoids and the oldest Amphibia.
Our knowledge of Devonian forms is still extremely meagre, the only certain proof of the existence of pentadactyle vertebrates at that period resting on the footprints discovered in Pennsylvania and described by O.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pentadactyle" in a variety of sentences. We hope that you will now be able to make sentences using this word.
