862 TEXTBOOK OF ZOOLOGY 



logical science. Courageous, indeed, is the modern biologist who 

 will utter generalizations which contradict the ever-growing story 

 told by fossils. ■ 



Some points, of course, may never be settled. Paleontologists, 

 for example, without exception are neo-Darwinists and believe im- 

 plicitly in natural selection as the major cause of the new species 

 constantly appearing on the earth. In this respect, they are con- \ 

 sidered by some biologists as being old fashioned. Certainly paleon- / 

 tologists could profitably inform themselves on some of the newer 

 aspects of genetics, and it is eciually certain that biologists should 

 know more about fossils 



