. Animal biology. Zoology; Biology. Fig. 331.—Porcupine, quill-pig, Erethizon dorsatum (Linnaeus). An example of the arboreal porcupines which are limited to the New World. They are large clumsy animala with long, sharp spines which are modified hairs in their pelage. These quills are protective and defensive structures; they dislodge easily, almost at a mere touch, and adhere ten- aciously to anything they penetrate because of the barbed tips; quills cannot be thrown by the animal—this is a mistaken belief. {Photographed from a specimen in the University of Nebraska State Museum.) are highly
. Animal biology. Zoology; Biology. Fig. 331.—Porcupine, quill-pig, Erethizon dorsatum (Linnaeus). An example of the arboreal porcupines which are limited to the New World. They are large clumsy animala with long, sharp spines which are modified hairs in their pelage. These quills are protective and defensive structures; they dislodge easily, almost at a mere touch, and adhere ten- aciously to anything they penetrate because of the barbed tips; quills cannot be thrown by the animal—this is a mistaken belief. {Photographed from a specimen in the University of Nebraska State Museum.) are highly developed and the molars are of a cutting type. This order is divided into two great suborders. The first, Fissipedia (fis i pe' di a; L., fissus, cleft, and pedis, foot), is made up of the terrestrial carnivores, whose feet are divided into toes armed with well-developed, curved. Fig. 332.—Nine-banded armadillo, Dasypus novemcinctus Linnaeus, found from Texas and southern New Mexico to Argentina. From a mounted specimen. X J^. claws (Fig. 329), and includes the cats, hyenas, dogs, wolves, foxes, raccoons, badgers, weasels, minks, skunks, otters, and bears. A large number of these are valuable for their fur. The second suborder, Pinnipedia (pm i pe' di a; L., pinna, feather, and pedis, foot), is made up of marine mammals in which both the fore- and hind limbs are modified. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wolcott, Robert Henry, 1868-1934; University of Nebraska (Lincoln campus). Dept. of Zoology. New York ; London : McGraw-Hill Book Company, Inc.
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