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

By Anthony P. Russell, Aaron M. Bauer

ISBN-10: 1552380386

ISBN-13: 9781552380383

Amphibians & reptiles (herpetofauna) are an important yet a lot overlooked part of the usual financial system of the province of Alberta. This moment variation, which maintains either as a box advisor & a entire common heritage, builds at the strengths of the 1st, with a richly illustrated textual content, & color pictures of the species taken via well known natural world photographer, Dr Wayne Lynch. The award-winning first variation got reputation within the Emerald Awards for Environmental Excellence. This moment variation has been completely revised & up-to-date. Nomenclature has been replaced to mirror present pondering within the box. New photos were additional, & maps & illustrations were up-to-date.

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Additional info for Amphibians and Reptiles of Alberta: A Field Guide and Primer of Boreal Herpetology

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Lower jaw not wider than upper jaw 47 Rana sylvatica 10 Rana pipiens Rana luteiventris Key to Eggs of the Amphibians of Alberta Go Ovum unpigmented Ascaphus truei Ovum pigmented Eggs in cylindrical strings (Fig. 12) Family Bufonidae Eggs in clusters or single (Fig. 12) Eggs enclosed by two envelopes (Fig. 12) Eggs enclosed by a single envelope (Fig. 12) Bufo hemiophrys 4A. Egg strings decidedly scalloped (Fig. 12) Bufo cognatus B. Egg strings not scalloped, often in double row (Fig. 12) Bufo boreas 1A.

5 mm Rana sylvatica B. Mass globular 10 10A. 5-6 mm Rana pipiens B. Egg diameter 10-15 mm Rana luteiventris Significant references for keys: Altig 1970; Altig et al. 1998; Anon 1964a, b; Corkran and Thorns 1966; Livezey and Wright 1947; Orton 1952; Petranka 1998; Powell et al. 1998; Savage 1959; Wright 1929. Species Accounts LONG-TOED SALAMANDER Ambystoma macrodactylum Description: Adult: Total length 80-120 mm (snout-vent length about 37-58 mm). A relatively slender salamander with an oval head, blunt snout and rather large eyes with the iris tinged with bronze.

Crocodylians (Fig. 9) are a group of twenty-three species of archosauromorph reptiles that today occur mostly in the tropics and subtropics. They are quadrupedal and generally largely aquatic. Some species occur in salt water and may travel great distances at sea. 8 Turtle Diversity. (collar bones); abdominal ribs (gastralia); a specialized ankle joint; osteoderms (bony plates) in the skin; a four-chambered heart; presence of an unpaired penis; and a laterally compressed tail, often with a single or paired dorsal ridge.

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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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