Anthony P. Russell, Aaron M. Bauer's Amphibians and Reptiles of Alberta: A Field Guide and Primer PDF

By Anthony P. Russell, Aaron M. Bauer

ISBN-10: 1552380386

ISBN-13: 9781552380383

Amphibians & reptiles (herpetofauna) are an important yet a lot missed section of the common economic system of the province of Alberta. This moment variation, which maintains either as a box consultant & a complete average background, builds at the strengths of the 1st, with a richly illustrated textual content, & color photos of the species taken through well known natural world photographer, Dr Wayne Lynch. The award-winning first version obtained popularity within the Emerald Awards for Environmental Excellence. This moment version has been completely revised & up to date. Nomenclature has been replaced to mirror present pondering within the box. New images were extra, & maps & illustrations were up to date.

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Extra resources for Amphibians and Reptiles of Alberta: A Field Guide and Primer of Boreal Herpetology

Example text

The vast majority of living reptiles belong to the Squamata. The two groups included in this order are the lizards and snakes. Snakes, however, arose from within lizards. Lizards can, therefore, only be defined as squamates that lack the special features of snakes. 9 Crocodylian Diversity. paired copulatory hemipenes in males; and absence of gastralia. In addition, lizards possess the following features that have been evolutionarily lost in snakes: specialized wrist and ankle joints; gracile limbs; and a "heel" formed by the hooked metatarsal bone of the fifth digit.

It has been found in the Milk River of southeastern Alberta and is an aquatic form which frequents ponds, marshes, small lakes, ditches and streams where the water 29 30 AMPHIBIANS AND REPTILES OF ALBERTA is quiet or sluggish and the bottom muddy and overgrown with aquatic plants. The lizard is Phrynosoma hernandesi, one of the horned lizards. These lizards are armed with head spines and sharp, projecting scales on the dorsal surface of the body. They are usually solitary in habits and when approached often crouch low, their markings and spiny skin blending with the ground.

Catenifer), a large yellow or cream-coloured snake with black, brown, or reddish brown dorsal blotches. This species lives in a variety of habitats throughout North America, from the lowlands high into the mountains and from coast to coast. It frequents desert, prairie, brushland, woodland, coniferous forests, and farmland. It is a good climber and burrower and is active chiefly by day, except in hot weather. When aroused, it hisses loudly and sometimes flattens its head and vibrates its tail. This behaviour, along with the diamond-shaped markings, causes these snakes to be mistaken for rattlesnakes.

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Amphibians and Reptiles of Alberta: A Field Guide and Primer of Boreal Herpetology by Anthony P. Russell, Aaron M. Bauer

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