Are the small human-like fossils found on Flores human endemic cretins?

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Show simple item record Obendorf, Peter en_US Oxnard, Charles en_US Kefford, Ben en_US
dc.contributor.editor en_US 2011-02-07T06:21:21Z 2011-02-07T06:21:21Z 2008 en_US
dc.identifier 2009006179 en_US
dc.identifier.citation Obendorf Peter, Oxnard Charles, and Kefford Benjamin 2008, 'Are the small human-like fossils found on Flores human endemic cretins?', The Royal Society Publishing, vol. 275, no. 16490, pp. 1287-1296. en_US
dc.identifier.issn 0962-8452 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.description.abstract Fossils from Liang Bua (LB) on Flores, Indonesia, including a nearly complete skeleton (LB1) dated to 18 kyr BP, were assigned to a new species, Homo floresiensis. We hypothesize that these individuals are myxoedematous endemic (ME) cretins, part of an inland population of (mostly unaffected) Homo sapiens. ME cretins are born without a functioning thyroid; their congenital hypothyroidism leads to severe dwarfism and reduced brain size, but less severe mental retardation and motor disability than neurological endemic cretins. We show that the fossils display many signs of congenital hypothyroidism, including enlarged pituitary fossa, and that distinctive primitive features of LB1 such as the double rooted lower premolar and the primitive wrist morphology are consistent with the hypothesis. We find that the null hypothesis (that LB1 is not a cretin) is rejected by the pituitary fossa size of LB1, and by multivariate analyses of cranial measures. We show that critical environmental factors were potentially present on Flores, how remains of cretins but not of unaffected individuals could be preserved in caves, and that extant oral traditions may provide a record of cretinism. en_US
dc.language en_US
dc.publisher The Royal Society Publishing en_US
dc.title Are the small human-like fossils found on Flores human endemic cretins? en_US
dc.parent Proceedings Of The Royal Society Of London Series B-biological Sciences en_US
dc.journal.volume 275 en_US
dc.journal.number 16490 en_US
dc.publocation United Kingdom en_US
dc.identifier.startpage 1287 en_US
dc.identifier.endpage 1296 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 060200 en_US
dc.personcode 0000062857 en_US
dc.personcode 0000062858 en_US
dc.personcode 109859 en_US
dc.percentage 100 en_US Ecology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Homo floresiensis; Homo sapiens; cretinism; congenital hypothyroidism; craniometry en_US
dc.staffid en_US
dc.staffid 109859 en_US

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