The hypothesis of the discoverers, Peter Brown, Richard Roberts and Thomas Sutikna, who published two articles in Nature in 2004 (see the links below this article External Links section), was from the outset it was of a new human species, Homo floresiensis , remained isolated on the Indonesian islands and have evolved to dwarfism . Just as quickly, another hypothesis was issued, these little men, often called hobbits, in reference to the characters of Tolkien's novels, were Homo sapiens , like us, but with a disease deforms the skeleton. For some, these hobbits would dwarf cretins in the medical sense (besides the dwarf marmoset would be proof), for others, they were victims of the syndrome Laron. Enjoy Coloring The difficulty (administrative) access to the site and retention of fossil several years by paleontologist Teuku Jacob did not facilitate the study and contributed to the controversy. Since then, almost every year, a new study reinforces one or more of these assumptions.
Comparison of contemporary human skull and that of Man of Flores (actually a woman) discovered in 2003 in Indonesia. The volume occupied by the brain was estimated at 380 cm3, a value impossible for a Homo sapiens adult. Error, says a new team, good value would be 430 cm3, which would bring the little lady of Flores in the species to which modern humans belong. © Peter Brown
Compatible anatomical details with trisomy 21
While the balance leaning for some time in favor of a separate species, with a study published in July 2013 and finding a new species of the genus Homo , double publication in PNAS (see links below this article) just push it in the other direction. Led by Robert B. Eckhardt , who never believed in this idea ( "who has no sense" ), a study seeks to show that LB1 shows signs of trisomy 21 . According to them, the size and brain volume, calculated from incomplete remains have been underestimated. The brain actually occupy 430 cm 3 , which is the volume "of people with trisomy 21 in the same area, " said Robert Eckhardt, a statement from the State University of Pennsylvania , to which he belongs. As for the size, it would be 1.06 m 1.26 m but. What, they argue, bring the lady of Flores in humans.
The team relies on a body of evidence observed on the anatomy of the skull and the fact that people with trisomy 21 have femurs shorter. These features would not emerge immediately because the remains were too fragmentary, and the authors explain "several indices have converged over the years" . The researchers concede that these anomalies corresponding to trisomy are present only in LB1, not leftovers, very incomplete, seven other individuals found in the cave and attributed to H. floresiensis . For these researchers, only the lady of Flores was diagnosed with this syndrome and it happened, his skeleton was the best preserved. This is the balance of income side of the abnormal individual. No doubt, however, that the mystery of the Liang Bua cave will still talk about him ...