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The bones of an extinct dwarf specie of buffalo were latterly unearthed on the Filipino island of Cebu .
DubbedBubaluscebuensis(BOO - buh - luhs seh - razzing - EN - Systeme International ) , the miniature buffalo [ image ] stand at just more than two feet , three times smaller than today ’s domesticated Old World buffalo , and weigh a mere 350 pounds . It likely lived during the Pleistocene ( Ice Age ) or Holocene Epochs , between 10,000 and 100,000 years ago .
This drawing shows the extinct dwarf water buffalo in proportion to the tamaraw (a dwarf water buffalo living on the Philippine island of Mindoro), a full-sized water buffalo and a human being. Illustration
" rude selection can produce dramatic body - size change . On islands where there is limited nutrient and a little population , large mammal often germinate to much littler size , " said lead researcher Darin Croft of Case Western Reserve University in Ohio .
The determination , detailed in the October issue of theJournal of Mammalogy , is the first well - stick out model of"island dwarfing"among cows or their congeneric and could have implications for the current debate aboutHomo floresiensis , a late discovered hominid that some scientists say is a new dwarf mintage .
Sizing up
dodo are rare in the tropical surroundings of the Philippines , a realm lack open rocky maculation where fossils are often buried and preserved , and this is the first fogy mammalian of any age report from Cebu Island . The fogey stiff were detect 50 years ago in a phosphate mine by applied scientist Michael Armas . almost four decades later , he register them to doctor Hamilcar Intengan , who recognized their grandness and bring them to The Field Museum for study in 1995 .
Scientists , including paleontologist John Flynn of the American Museum of Natural story in New York , examined the fond skeleton , which let in two teeth , two vertebrae , two upper weapon system finger cymbals , a foot bone [ image ] and two hoof bones . The specie had comparatively large tooth , which is distinctive of island midget , but also relatively big foot , which are more often than not reduced along with other torso features in dwarfing .
" The reason that might be is because evolution actually works in dissimilar ways – we call it mosaic evolution – that not all feature change in exactly the same way all the time . For whatever reason , this special specie did n’t reduce the understructure proportion the same way that dwarfs of other metal money on other islands might have , " Flynn toldLiveScience .
Island survival
The finding supports the estimation that the earliest weewee American bison were prominent and first evolved in Southeast Asia . The animals likely journey from the mainland to the Filipino island when ocean level dropped roughly 400 foot during the peak of the " Ice old age " about 20,000 years ago .
Less food was available on the islands and the buffalos might have cringe to compensate , Flynn said . That could be why this buffalo is little than two live on pertain species – a domestic Bison bison ( Bubalusbubalis ) and the tamaraw ( Bubalusmindorensis ) .
The tamaraw is also a gnome and lives only on the Philippine island of Mindoro . At about three feet tall at the shoulder joint and 500 pounds , it is much larger than the new discovered species . The researchers hypothesize that the new dwarf buffalo was modest than tamaraw because it swan an even smaller island that had less food .
In combination with the tamaraw on Mindoro and a news report of buffalo fossil teeth find on another Filipino island , Luzon , the new discovery indicates this genus might have once live throughout the Philippines , most of which is an pelagic archipelago , never connected to any continental land mass .
Dwarf disputation
The inquiry could put up insights into debate on the development of small - corporal species elsewhere in the tropics such as theproposed new hominid , Homo floresiensis , found on the Indonesian island of Flores in 2003 .
While Flynn does n’t have sufficient noesis of thedwarf hominid , the new breakthrough does support the validity of nanus island metal money in general – indirectly bring weight to the dwarf hominid . If a American buffalo could shrink , why not a hominid ?
" This uncovering emphasizes that it ’s not all that uncommon to find midget species develop on islands , " Flynn said .
