Resources

Periodicals

Escalona, T., and J. E. Fa. "Survival of Nests of the Terecay Turtle (Podocnemis unifilis) in the Nichare-Tiwadu Rivers, Venezuela." Journal of Zoology 244 (1998): 303-312.

Kuchling, G. "Possible Biennial Ovarian Cycle of the

Freshwater Turtle Erymnochelys madagascariensis." Journal of Herpetology 27, no. 4 (1993): 470-472.

-. "Biologie und Lebensraum von Erymnochelys madagascariensis (Grandidier, 1867) und Vergleich mit den andern Wasserschildkröten Madagaskars." Salamandra 28, nos. 3 and 4 (1993): 231-250.

Thorbjarnarson, J. B., N. Perez, and T. Escalona. "Nesting of Podocnemis unifilis in the Capanaparo River, Venezuela." Journal of Herpetology 27, no. 3 (1993): 344-347.

Valenzuela, N. "Multiple Paternity in Side-Necked Turtles Podocnemis expansa: Evidence from Microsatellite DNA Data." Molecular Ecology 9 (2000): 99-105.

-. "Constant, Shift, and Natural Temperature Effects on

Sex Determination in Podocnemis expansa Turtles." Ecology 82, no. 11 (2001): 3,010-3,024.

-. "Maternal Effects on Life-History Traits in the

Amazonian Giant River Turtle Podocnemis expansa." Journal of Herpetology 35, no. 3 (2001): 368-378.

John B. Iverson, PhD

Class Reptilia Order Testudines Suborder Cryptodira Family Testudinidae

Thumbnail description

Terrestrial turtles with elephantine hind legs, flattened forelegs, and unwebbed toes

Size

Up to 55 in (140 cm) carapace length and 562 lb (255 kg)

Number of genera, species

12 genera; ca. 47 species

Habitat

Terrestrial ecosystems Conservation status

Critically Endangered: 1 species; Endangered: 7 species; Vulnerable: 16 species

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