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Extinction considered to have been due to habitat clearance, predation by feral cats and possibly red foxes. [58] Maclear's rat: Rattus macleari: Christmas Island: Last collected in 1901-1902. Became extinct after being infected by trypanosome carried by fleas hosted by black rats, which were accidentally introduced by the SS Hindustan in 1900 ...
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Diprotodon is a marsupial in the order Diprotodontia, [d] suborder Vombatiformes (wombats and koalas), and infraorder Vombatomorphia (wombats and allies). It is unclear how different groups of vombatiformes are related to each other because the most-completely known members—living or extinct—are exceptionally derived (highly specialised forms that are quite different from their last common ...
Incisions on bones of the extinct large kangaroo Macropus titan, and the general morphology of Thylacoleo suggests that it fed in a similar manner to modern cheetahs, by using their sharp teeth to slice open the ribcage of their prey, thereby accessing the internal organs. They may have killed by using their front claws as either stabbing ...
As one of the first fossil crocodilians to be recognized from Australia, Quinkana has a long history. Some of the earliest fossil finds now attributed to this genus date as far back as 1886, when Charles Walter De Vis found a variety of fossil bones, including those of Quinkana, in the Darling Downs region of Queensland, which he informally dubbed Pallimnarchus pollens (now considered to be a ...
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
A life form (also spelled life-form or lifeform) is an entity that is living, [1] [2] such as plants , animals , and fungi . It is estimated that more than 99% of all species that ever existed on Earth, amounting to over five billion species, [3] are extinct. [4] [5] Earth is the only celestial body known to harbor life forms. No form of ...
Extinction of taxa is difficult to detect, as a long gap without a sighting is not definitive. Some mammals declared as extinct may very well reappear. [1] For example, a study found that 36% of purported mammalian extinction had been resolved, while the rest either had validity issues (insufficient evidence) or had been rediscovered. [3]