Portal:Extinct and endangered species

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In biology and ecology, extinction is the cessation of existence of a species or group of taxa, reducing biodiversity. The moment of extinction is generally considered to be the death of the last individual of that species (although the capacity to breed and recover may have been lost before this point; see population bottleneck). Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "re-appears" (typically in the fossil record) after a period of apparent absence.

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Indri indri 001.jpg
Lemurs (Listeni/ˈlmər/ LEE-mər) are a clade of strepsirrhine primates endemic to the island of Madagascar. The word "lemur" derives from the word lemures (ghosts or spirits) from Roman mythology and was first used to describe a slender loris due to its nocturnal habits and slow pace, but was later applied to the primates on Madagascar. Although lemurs often are confused with ancestral primates, the anthropoid primates (monkeys, apes, and humans) did not evolve from them; instead, lemurs merely share morphological and behavioral traits with basal primates. Lemurs arrived in Madagascar around 62 to 65 mya by rafting on mats of vegetation at a time when ocean currents favored oceanic dispersal to the island. Since that time, lemurs have evolved to cope with an extremely seasonal environment and their adaptations give them a level of diversity that rivals that of all other primate groups. Until shortly after humans arrived on the island around 2,000 years ago, there were lemurs as large as a male gorilla. Today, there are nearly 100 species of lemurs, and most of those species have been discovered or promoted to full species status since the 1990s; however, lemur taxonomic classification is controversial and depends on which species concept is used. Even the higher-level taxonomy is disputed, with some experts preferring to place most lemurs within the infraorder Lemuriformes, while others prefer Lemuriformes to contain all living strepsirrhines, placing all lemurs in superfamily Lemuroidea and all lorises and galagos in superfamily Lorisoidea.

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Madeiran Scops Owl - Bermuda Flicker - The world's 100 most threatened species - Trias Greenfinch - Tityus exstinctus - Lowland Kagu - Bermuda Towhee - Bos palaesondaicus - Battus polydamas antiquus - Tule shrew - Florida naked-tailed rat - Chadwick Beach cotton mouse - Heliaster solaris - Kaua'i Mole Duck - Yunnan lar gibbon - Darwinius - Saint Helena Shearwater - Great Ground Dove - Huahine Cuckoo-Dove - Puijila - Barbados Rail - Amitabha (bird) - Snipe-rail - Lord Howe Boobook - Lord Howe Fantail - Norfolk Boobook - Gigantornis - Australodelphis - Broad-billed Moa - North Island Giant Moa - Norfolk Thrush - Rhinodrilus fafner - Réunion Rail - Huahine Starling - Argocoffeopsis lemblinii - Chatham Kaka - Mohoidae - Waitaha Penguin - Palaeoloxodon mnaidriensis - Martinique Macaw - Galapagos damsel - Extinct Birds (Rothschild book) - Réunion Fody - Liverpool Pigeon - Bromus interruptus - Oceanic Eclectus Parrot - San Cristóbal Vermilion Flycatcher - Beelzebufo - Onychonycteris - Antioquia Brush Finch



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Martha last passenger pigeon 1914.jpg
Martha, the last passenger pigeon, died in her cage in the Cincinnati Zoo and Botanical Garden on 1 September 1914.

Extinct and endangered species news

  • 12 June 2014 22 out of 99 lemur species are listed as critically endangered in the 2014 IUCN Red List. 48 species are endangered and 20 species are listed as vulnerable.
  • 29 June 2013 Almost 7 years after the find of a dead specimen a living Night Parrot, one of Australias rarest birds, was photographed and filmed for the very first time.
  • 5 June 2013 Chinese scientists unearthed the fossil remains of Archicebus, the oldest known primate with an almost complete preserved skeleton.


Extinct and endangered species topics

Extinction - Extinction event - Local extinction - List of extinct animals - List of extinct plants - Fossil - Holocene extinction event - Cretaceous–Paleogene extinction event - Cambrian-Ordovician extinction events - Ordovician-Silurian extinction events - Triassic-Jurassic extinction events - Late Devonian extinction - Permian-Triassic extinction event - Signor-Lipps effect - Australian megafauna - Dwarf elephant - Pseudoextinction - Extinction Vortex - Prehistoric reptile - Human overpopulation - Human extinction - Voluntary Human Extinction Movement - Evolution - Biodiversity - Invasive species - Breeding back - Lazarus taxon - Endangered species - Critically Endangered - Vulnerable species - Least Concern - Data Deficient - BirdLife International - IUCN Red List - Endangered Species Act - International Union for Conservation of Nature

Extinction events


Millions of years before present

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The WikiProject for this topic is Extinction.

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See also Wikispecies, a Wikimedia project dedicated to classification of biological species.

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