polytypic

How to use polytypic in a sentence

• A discussion of the polytypic species, Hypopachus oxyrrhinus, with a description of a new subspecies.

  The Amphibians and Reptiles of Michoacn, Mxico | William E. Duellman

• In polytypic species, the diagnosis of a subspecies is designed only to distinguish it from other subspecies of that species.

  North American Recent Soft-shelled Turtles (Family Trionychidae) | Robert G. Webb

• The bar of mutual sterility, whenever and wherever it occurs, must always render polytypic evolution possible.

  Darwin, and After Darwin (Vol 3 of 3) | George John Romanes

• It has been shown that divergent or polytypic evolution on common areas is inexplicable by natural selection alone.

  Darwin, and After Darwin (Vol 3 of 3) | George John Romanes

• Had he gone a step further, he must have seen that separation, in some form or another, is "indispensable" to polytypic evolution.

  Darwin, and After Darwin (Vol 3 of 3) | George John Romanes