"Vertebrata" Quotes from Famous Books
 ... we enter on a very intricate subject, for naturalists have not defined to each other's satisfaction what is meant by an advance in organization. Amongst the vertebrata the degree of intellect and an approach in structure to man clearly come into play. It might be thought that the amount of change which the various parts and organs pass through in their development from the embryo ...
— Introduction to the Science of Sociology • Robert E. Park
... organization. In the case of the larger groups, indeed, it is usually possible to say that the members of this group as a whole are more highly organized than the members of that group as a whole; so that, for instance, we have no hesitation in regarding the Vertebrata as more highly organized than the Invertebrata, Birds than Reptiles, and so on. But when we proceed to smaller subdivisions, such as genera and species, it is usually impossible to say that the one type is more highly ...
— Darwin, and After Darwin (Vol. 1 and 3, of 3) • George John Romanes
... this and certain appearances in the sandstone, as if a tail had been dragged behind the animal, in some sets of footsteps, but not in others, there is nothing to suggest to the comparative anatomist any idea of even the class of Vertebrata to which the animal should be referred.'[5] Soon after, some teeth and fragments of bones were discovered, by which Professor Owen was able to indicate an animal of the frog-family (Batrachia), but with certain affinities to the ...
— Chambers's Edinburgh Journal, No. 459 - Volume 18, New Series, October 16, 1852 • Various |
