An elementary text is necessarily conservative in presenting the results of scientific progress, and rightfully witholds recognition of new discoveries until these have become definitely established. As commonly presented in elementary courses this subject has for some time been in need of a thorough revision. The remarkable discoveries of recent years with regard to the character of the earliest known land plants, the Psilophytales of the Devonian, have provided ...
Animal Genomics for Conservation and Production: A Practical Approach