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Two new species of Eleutherodactylus (Amphibia: Leptodactylidae) from the lowlands and lower cloud forests of western Ecuador

Published in Breviora, in 1980, in volume 457, pages 1-12

A new species of Atelopus (Anura: Bufonidae) from the cloud forests of northwestern Ecuador

Published in Breviora, in 1980, in volume 458, pages 1-10

A new species of Dendrobates (Anura: Dendrobatidae) from the lowland rain forests of western Ecuador

Published in Breviora, in 1980, in volume 459, pages 1-7

On the evolution of the jaw adductor musculature in primitive gnathostome fishes

Published in Breviora, in 1980, in volume 460, pages 1-10

Geographic variation in Anolis brevirostris (Sauria: Iguanidae) in Hispaniola

Published in Breviora, in 1980, in volume 461, pages 1-31

Eleutherodactylus eremitus, a new trans-Andean species of the Lacrimosus assembly from Ecuador (Amphibia: Leptodactylidae)

Published in Breviora, in 1980, in volume 462, pages 1-7

Jaw musculature of the West Indian snake Alsophis cantherigerus brooksi (Colubridae, Reptilia)

Published in Breviora, in 1980, in volume 463, pages 1-26