The book concludes with a discussion of the study of fossil salamanders as it relates to the development of a realistic phylogeny and classification of the grou

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The Grand Staircase-Escalante National Monument is the location of one of the best-known terrestrial records for the late Cretaceous. Prior fieldwork confirmed

The most trusted and best-selling textbook on the diverse forms and fascinating lives of vertebrate animals. Covering crucial topics from morphology and behavio