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| | '''Wombats''' are stocky, tailless, ursiform [[marsupial]]s of the [[Linnaean taxonomy|Linnaean taxonomic]] family ''Vombatidae''. They are nocturnal, walk on four short legs, like to burrow, and are herbivorous. | | '''Wombats''' are stocky, tailless, ursiform [[marsupial]]s of the [[Linnaean taxonomy|Linnaean taxonomic]] family ''Vombatidae''. They are nocturnal, walk on four short legs, like to burrow, and are herbivorous. |
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| − | The common wombat (''Vombatus ursinus'') reaches about three feet in length and produces distinctive cubical scat<ref name="triggs">[http://dannyreviews.com/h/Wombat.html Review: ''The Wombat: Common Wombats in Australia'' by Barbara Triggs]</ref>. There are also two or three (depending on classification) rare species of hairy-nosed wombats of the genus ''Lasiorhinus''<ref>[http://www.wombania.com/wombats/hairy-nosed-wombat.htm Wombat Information Center: Hairy Nosed Wombat]</ref>. | + | The common wombat (''Vombatus ursinus'') reaches about three feet in length and produces distinctive cubical scat.<ref name="triggs">[http://dannyreviews.com/h/Wombat.html Review: ''The Wombat: Common Wombats in Australia'' by Barbara Triggs]</ref> There are also two or three (depending on classification) rare species of hairy-nosed wombats of the genus ''Lasiorhinus''.<ref>[http://www.wombania.com/wombats/hairy-nosed-wombat.htm Wombat Information Center: Hairy Nosed Wombat]</ref> |
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| − | One of the distinctive features of wombats is that their pouch opens towards the rear of the animal, like the koala, marsupial mole, and the now-considered-extinct thylacine (tasmanian tiger), but unlike most other marsupials<ref>http://www.parkweb.vic.gov.au/education/factfiles/03.htm</ref>. This may be to avoid the problem of the pouch filling with dirt whilst the animal is burrowing. | + | One of the distinctive features of wombats is that their pouch opens towards the rear of the animal, like the koala, marsupial mole, and the now-considered-extinct thylacine (tasmanian tiger), but unlike most other marsupials.<ref>http://www.parkweb.vic.gov.au/education/factfiles/03.htm</ref> This may be to avoid the problem of the pouch filling with dirt whilst the animal is burrowing. |
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| | ==Origins== | | ==Origins== |
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| | ===Creationary hypothesis=== | | ===Creationary hypothesis=== |
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| − | According to [[creationists]], representatives of the separately created wombat [[baraminology|archaebaramin]] were among those animals that migrated from the [[Middle East]] to [[Australia]] as part of the [[Post-Diluvian Diasporas]]. There is debate whether this migration happened over land<ref name="ca1">[http://www.christiananswers.net/q-aig/aig-c006.html "How did animals get from the Ark to isolated places, such as Australia?"], ChristianAnswers.net.</ref> -- as Australia was still for a time almost connected to Europe by land bridges similar to the one that connected Asia to America<ref>Batten, Don, et. al., 207, ''The Creation Answers Book'', [http://www.creationontheweb.com/images/pdfs/cabook/chapter17.pdf Chapter 17]</ref> -- or if they [[rafting (ecology) | rafted]] on mats of vegetation torn up by the receding flood waters.<ref name="ca1"/> | + | According to [[creationists]], representatives of the separately created wombat [[baraminology|archaebaramin]] were among those animals that migrated from the [[Middle East]] to [[Australia]] as part of the [[Post-Diluvian Diasporas]]. There is debate whether this migration happened over land<ref name="ca1">[http://www.christiananswers.net/q-aig/aig-c006.html "How did animals get from the Ark to isolated places, such as Australia?"], ChristianAnswers.net.</ref>—as Australia was still for a time almost connected to Europe by land bridges similar to the one that connected Asia to America<ref>Batten, Don, et. al., 207, ''The Creation Answers Book'', [http://www.creationontheweb.com/images/pdfs/cabook/chapter17.pdf Chapter 17]</ref>—or if they [[rafting (ecology)|rafted]] on mats of vegetation torn up by the receding flood waters.<ref name="ca1"/> |
| − | Creationists suggest that the rear-opening pouch provides strong evidence for the wombat's special creation.<ref>[http://www.icr.org/article/677/ "Watches and Wombats"], by Ken Ham, Institute for Creation Research</ref>. | + | Creationists suggest that the rear-opening pouch provides strong evidence for the wombat's special creation.<ref>[http://www.icr.org/article/677/ "Watches and Wombats"], by Ken Ham, Institute for Creation Research</ref> |
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| | ===Evolutionary hypothesis=== | | ===Evolutionary hypothesis=== |
| − | Modern wombats belong to the order Diprotodontia (meaning two front teeth). It is thought that the common ancestors of wombats and [[kangaroo | kangaroos]] lived about 55-65 million years ago and that wombats are closely related to the [[koala]]<ref name="triggs"/>. This hypothesis is supported by [[mitochondria]]l genetic evidence as well as fossil evidence.<ref>Janke A et al. "Phylogenetic analysis of 18S rRNA and the mitochondrial genomes of the wombat, Vombatus ursinus, and the spiny anteater, Tachyglossus aculeatus: increased support for the Marsupionta hypothesis." (2002) Journal of molecular evolution 54:71-80. </ref> | + | Modern wombats belong to the order Diprotodontia (meaning two front teeth). It is thought that the common ancestors of wombats and [[kangaroo]]s lived about 55-65 million years ago and that wombats are closely related to the [[koala]].<ref name="triggs"/> This hypothesis is supported by [[mitochondria]]l genetic evidence as well as fossil evidence.<ref>Janke A et al. "Phylogenetic analysis of 18S rRNA and the mitochondrial genomes of the wombat, Vombatus ursinus, and the spiny anteater, Tachyglossus aculeatus: increased support for the Marsupionta hypothesis." (2002) Journal of molecular evolution 54:71-80.</ref> |
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| | == References == | | == References == |