Origin and Diversity of Amphibians

Amphibians evolved from lobe-finned fishes, adapting to land with legs and lungs. They first appeared 370 million years ago and now include over 6000 species across three orders: Anura, Eurodella, and Apoda. Anura includes frogs and toads, with differences in skin texture. Eurodella consists of salamanders and newts, characterized by elongated bodies and tails. Apoda are legless, tropical soil-dwelling amphibians. Amphibian populations are declining, raising environmental concerns.

What adaptations did amphibians develop to adapt to life on land?

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What are the main differences between the orders Anura, Eurodella, and Apoda?

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How do the skin characteristics of frogs and toads differ?

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Describe the physical characteristics of organisms in the order Apoda.

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What is the current status of amphibian populations globally?

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