HOMO FLORESIENSIS
Homo floresiensis lived on the island of Flores
(Indonesia) 190-50 Kya (2016SutiknaT_RobertsRG). The ancestor of this species
is «suspected» to be the Asian subtype Homo erectus, which arrived from the
mainland about 800 Kya (2009LyrasGA_DeVosJ). The anatomy of Homo floresiensis
is less similar to Homo habilis (2008Gordon_WoodB).
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| Homo floresiensis Author: Cicero Moraes et al. (Arc-Team) ; source:wikimedia.org collection (license CC BY 4.0, no changes). |
Among the discovered remains of a female Homo
floresiensis (humanorigins.si.edu) there is a relatively well-preserved left
pelvic bone (LB1/7). It has a «typically human» acetabulum
(2009JungersWL_DjubiantonoT:Fig.3). The acetabulum has a complete fusion of the
three bones that form it and is not hypoplastic (2012BrownP:Fig.4). The
acetabular fossa is rounded and deep, continuing downwards and forwards as a
wide acetabular notch. This area is the site of attachment and function of the
ligamentum capitis femoris (LCF). The left femur (LB1/9) of Homo floresiensis
is relatively well preserved. It is smaller than any modern human femur and is
close in length to the reconstructed femur of Australopithecus afarensis (AL288-1, «Lucy»). On the head with a diameter of about 31 mm, a shallow fossa of
the femoral head «for the ligamentum teres» is visualized (2009
JungersWL_DjubiantonoT). Thus, the species Homo floresiensis reliably had LCF,
normally without congenital and dystrophic changes.
References
Sutikna T, Tocheri MW, Morwood MJ, Saptomo EW, Awe RD, Wasisto S, ... Roberts RG. Revised stratigraphy and chronology for Homo floresiensis at Liang Bua in Indonesia. Nature. 2016;532(7599)366-9. [researchgate.net]
Lyras GA, Dermitzakis MD, Van der Geer AAE, Van der Geer SB, De Vos J. The origin of Homo floresiensis and its relation to evolutionary processes under isolation. Anthropological Science. 2009;117(1)33-43. [jstage.jst.go.jp]
Gordon, A. D., Nevell, L., Wood, B. The Homo floresiensis cranium (LB1): Size, scaling, and early Homo affinities. Proceedings of the National Academy of Sciences. 2008;105(12)4650-5. [pmc.ncbi.nlm.nih.gov]
Brown P. LB1 and LB6 Homo floresiensis are not modern human (Homo sapiens) cretins. Journal of Human Evolution. 2012:62(2)201-24. [peterbrown-palaeoanthropology.net]
Jungers WL, Larson SG, Harcourt-Smith W, Morwood MJ, Sutikna T, Awe RD, Djubiantono T. Descriptions of the lower limb skeleton of Homo floresiensis. Journal of Human Evolution. 2009;57(5)538-54. [academia.edu]
Keywords
ligamentum capitis femoris, ligamentum teres, ligament of head of femur, doctrine, homo floresiensis
The original text in Russian is available at the link: Homo floresiensis
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