Amphibians and reptiles of the Pacific northwest
University Press of Idaho, 1983 - Nature - 332 pages
Written by outstanding authorities in the field, this Northwest guide tells in interesting and readable fashion how to find and identify the various salamanders, frogs, turtles, lizards, and snakes that inhabit Washington, Oregon, Idaho, and British Columbia.
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Historical development of the herpetofauna
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Alligator Lizard amphibians amphibians and reptiles aquatic average blotches body breeding season British Columbia Bufo Bullfrogs burrows California carapace Cascades caudals clutch coastal costal grooves deposit diameter dorsal scales dorsal stripe dorsolateral eggs elevation Ensatina feed females flecks forests Garter Snake genera genus Gopher Snakes gray green ground color HABITAT hatching head herpetofauna hind Horned Lizard Idaho individuals KILOMETERS 0 100 lake larger larvae legs length mating metamorphosed middorsal mottling Mountains nest newts North northern Northern Alligator Lizard Northwestern occur Oregon Pacific Giant Salamander Pacific Northwest Painted Turtles parotoid glands Plethodon populations posterior predators prey Rana range region rocks scale rows Short-horned Lizard sides skin Slender Salamander snout southern species spots streams subspecies tadpoles talus teeth temperatures terrestrial Thamnophis Tiger Salamanders toads upper labials usually VARIATION vegetation venter Washington western Oregon Western Pond Turtles yellow