New PDF release: Grzimek's Student Animal Life Resource - Crustaceans,

By Catherine Allen

ISBN-10: 0787694029

ISBN-13: 9780787694029

Following within the footsteps of Gale's acclaimed Grzimek's Animal lifestyles Encyclopedia, second Ed., Grzimek's scholar Animal lifestyles Resource bargains extensive, complete assurance of the animal nation, starting from the straightforward -- sponges and corals -- to the advanced -- mammals. during this 20-volume set, animals are grouped through significant classifications: sponges; corals; jellyfishes; segmented worms; crustaceans and mollusks; bugs; fishes; amphibians; reptiles birds; and mammals.

In addition, this scholar variation contains an summary with pictures and illustrations, and is found in every one quantity of the set. The "Words to understand" part offers a pronunciation and definition in the textual content to medical or different tricky phrases and names. additionally incorporated during this model are the Species checklist via Biome and Species checklist via Geographic diversity.

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Additional resources for Grzimek's Student Animal Life Resource - Crustaceans, Mollusks, and Segmented Worms

Sample text

At least 11 species are probably endemic, and several others have over two-thirds of their ranges within the area. Only one species—the Eastern Newt—occurs virtually areawide. Most (62) of our salamanders are plethodontids—a dominant family with eight genera, three of which are large: Plethodon (29 46 AMPHIBIANS (CLASS AMPHIBIA) species), Desmognathus (17), and Eurycea (10). The only other large group is the Ambystomatidae, a family with seven species in our area, all in the genus Ambystoma. Nonetheless, our fauna is taxonomically diverse; three families and also five genera are each represented by only a single species.

It is listed as a species of Special Concern in North Carolina. ) Waterdogs differ from other large salamanders by having 4 toes on each hind foot and conspicuous external gills that are retained throughout life. This species differs from the Common Mudpuppy in having a lighter dorsal color with more pattern contrast and a more heavily spotted belly. Juveniles lack the dark stripe on the back characteristic of that species. Dark spots form gradually in juveniles, first on the back and then, as maturity approaches, 52 AMPHIBIANS (CLASS AMPHIBIA) on the belly.

The first is historical: the seaboard of Virginia and the Carolinas was explored and colonized early—as early as more northern states and earlier than states to the south. The second factor is biological: the amount of the fauna itself, numerous in species and individuals, is three times the size of that of New England and twice that to be found from Delaware northward. Our fauna includes such spectacular elements as alligators, sea turtles, rattlesnakes, amphiumas, and vociferous and colorful frogs, all of which were duly reported in early travelers’ accounts, sometimes faithfully and sometimes with the colorful embellishment of folklore.

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Grzimek's Student Animal Life Resource - Crustaceans, Mollusks, and Segmented Worms by Catherine Allen

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