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

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Show simple item record Obendorf, PJ Oxnard, CE Kefford, B 2011-02-07T06:21:21Z 2008-01
dc.identifier.citation Proceedings Of The Royal Society Of London Series B-biological Sciences, 2008, 275 (16490), pp. 1287 - 1296
dc.identifier.issn 0962-8452
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.
dc.publisher The Royal Society Publishing
dc.title Are the small human-like fossils found on Flores human endemic cretins?
dc.type Journal Article
dc.parent Proceedings Of The Royal Society Of London Series B-biological Sciences
dc.journal.volume 16490
dc.journal.volume 275
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 0602 Ecology
dc.personcode 109859
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.description.keywords Homo floresiensis
dc.description.keywords Homo sapiens
dc.description.keywords cretinism
dc.description.keywords congenital hypothyroidism
dc.description.keywords craniometry
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of the Environment
pubs.organisational-group /University of Technology Sydney/Strength - Environmental Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
utslib.collection.history School of the Environment (ID: 344)
utslib.collection.history Closed (ID: 3)

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