Related topics: species · frogs

Mass amphibian extinctions globally caused by fungal disease

An international study led by The Australian National University (ANU) has found a fungal disease has caused dramatic population declines in more than 500 amphibian species, including 90 extinctions, over the past 50 years.

Frog killing fungus found to infect crayfish too

(Phys.org)—A team of US biologists has found that the chytrid fungus, believed to be responsible for amphibian deaths worldwide, also infects and kills crayfish. In their paper published in the Proceedings of the National ...

Fossil cricket: Jurassic love song reconstructed

Some 165 million years ago, the world was host to a diversity of sounds. Primitive bushcrickets and croaking amphibians were among the first animals to produce loud sounds by stridulation (rubbing certain body parts together). ...

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Amphibian

   Order Temnospondyli - extinct Subclass Lepospondyli - extinct Subclass Lissamphibia    Order Anura    Order Caudata    Order Gymnophiona

Amphibians (class Amphibia), such as frogs, toads, salamanders, newts, and caecilians, are ectothermic (or cold-blooded) animals that metamorphose from a juvenile water-breathing form, to an adult air-breathing form. Though amphibians typically have four limbs, the Caecilians are notable for being limbless. Unlike other land animals (amniotes), amphibians lay eggs in water. Amphibians are superficially similar to reptiles.

Amphibians are ecological indicators, and in recent decades there has been a dramatic decline in amphibian populations around the globe. Many species are now threatened or extinct.

Amphibians evolved in the Devonian Period and were top predators in the Carboniferous and Permian Periods, but many lineages were wiped out during the Permian-Triassic extinction. One group, the metoposaurs, remained important predators during the Triassic, but as the world became drier during the Early Jurassic they died out, leaving a handful of relict temnospondyls like Koolasuchus and the modern orders of Lissamphibia.

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