Since the 1980s, decreases in amphibian populations, including population decline and localized mass extinctions, have been observed in locations all over the world. This type of biodiversity loss is
The golden toad of Monteverde, Costa Rica, was among the first casualties of amphibian declines. Formerly abundant, it was last seen in 1989.
The distribution of 2,873 globally threatened amphibian species.
Trematode cyst-infected Pacific tree frog (Hyla regilla) with supernumerary limbs, from La Pine, Deschutes County, Oregon, 1998–9. This 'category I' deformity (polymelia) is believed to be caused by the trematode cyst infection. The cartilage is stained blue and calcified bones in red.
An adult male Ecnomiohyla rabborum in the Atlanta Botanical Garden, a species ravaged by Batrachochytrium dendrobatidis in its native habitat. It was the last known surviving member of its species, and with its death on Sept 28, 2016, the species is believed to be extinct.
Extinction
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Extinction is the termination of a species via the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recov
Decline in amphibian populations
…Red List, which incorporates the Global Amphibian Assessment and subsequent updates, lists 650 amphibian species as "Critically Endangered", and 35 as "Extinct". Despite the high risk this group faces, recent evidence suggests the public is growing largely indifferent to this and other environmental problems…
The thylacine (Thylacinus cynocephalus) is an example of a recently extinct species.
Palaeotherium is an example of an extinct genus that is only recorded from fossil records before the existence of hominids.
External mold of the extinct Lepidodendron from the Upper Carboniferous of Ohio
The dodo of Mauritius, shown here in a 1626 illustration by Roelant Savery, is an often-cited example of modern extinction.