by Contributing Editor Spencer J. Weinreich
King Philip Came Over For Good Soup. Kingdom, Phylum, Class, Order, Family, Genus, Species. Few mnemonics can be as ubiquitous as the monarch whose dining habits have helped generations of biology students remember the levels of the taxonomic system. Though the progress of the field has introduced domains (above kingdoms), tribes (between family and genus) and a whole array of lesser taxons (subspecies, subgenus, and so on), the system remains central to identifying and thinking about organic life.
Green anaconda (Eunectes murinus): a reptile, not an amphibian (photo credit: Smithsonian’s National Zoo)
Consider “reptiles.” Many a precocious young naturalist learns—and impresses upon their parents with zealous (sometimes exasperated) insistence—that snakes are not slimy. The snake is a reptile, not an amphibian, covered with scales rather than a porous skin. Reaching high school biology, this distinction takes on taxonomic authority: in…
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