Homo floresiensis

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).

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

NB! Fair practice / use: copied for the purposes of criticism, review, comment, research and private study in accordance with Copyright Laws of the US: 17 U.S.C. §107; Copyright Law of the EU: Dir. 2001/29/EC, art.5/3a,d; Copyright Law of the RU: ГК РФ ст.1274/1.1-2,7

BLOG CONTENT

999–10 Kya

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Dix O., painting, Jacob wrestling with the angel (1943). Depicting the circumstances and mechanism of the ligamentum capitis femoris (LCF) injury based on the description in the Book of Genesis: 25 And Ja cob was left alone; and there wrestled a man with him until the breaking of the day. 26 And when he saw that he could not prevail against him, he struck against the hollow of his thigh ; and the hollow of Jacob's thigh was put out of joint, as he was wrestling with him. … 33 Therefore do the children of Israel not eat the sinew which shrank, which is upon the hollow of the thigh, unto this day; because he struck against the hollow of Jacob's thigh on the sinew that shrank. ( 1922LeeserI , Genesis (Bereshit) 32:25-26,33) More about the plot in our work: Ninth month, eleventh day ( 2024 АрхиповСВ. Девятый месяц, одиннадцатый день ). Otto Dix – Jacob Wrestling with the Angel (1943); original in the Stuttgart Museum, copy in the galerie-d...

1579PareA

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