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As of December 2021, the International Union for Conservation of Nature (IUCN) lists 673 critically endangered amphibian species, including 146 which are tagged as possibly extinct. [1] [2] 9.2% of all evaluated amphibian species are listed as critically endangered. No subpopulations of amphibians have been evaluated by the IUCN.
Additionally 1193 amphibian species (16% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. [ 2 ]
Exotic Amphibians and Reptiles of the United States is a field guide to the exotic amphibians and reptiles established in the continental United States and Hawaii. It is co-authored by herpetologists Walter E. Meshaka Jr. , Suzanne L. Collins, R. Bruce Bury , and Malcolm L. McCallum .
Amphibians are in decline worldwide, with 2 out of every 5 species threatened by extinction, according to a paper published Wednesday in the scientific journal Nature.
Over a hundred grizzly bears had to be euthanized in the next several years, putting the park's bear population on the brink of extinction. On July 28, 1975, under the authority of the Endangered Species Act , the United States Fish and Wildlife Service listed the grizzly bear as a threatened species in the lower 48 states.
They stopped along a remote road to search for sand-dwelling reptiles and amphibians. On a nearby sand dune, researchers found 10 lizards with a unique pattern, the study said. They took a closer ...
This is a checklist of amphibians found in Northern America, based mainly on publications by the Society for the Study of Amphibians and Reptiles. [1] [2] [3] The information about range and status of almost all of these species can be found also for example in the IUCN Red List of Threatened Species site. [4]
The body is cylindrical and often darkly coloured, and the skull is bullet-shaped and strongly built. Caecilian heads have several unique adaptations, including fused cranial and jaw bones, a two-part system of jaw muscles, and a chemosensory tentacle in front of the eye. The skin is slimy and bears ringlike markings or grooves and may contain ...