The lower limb off H. naledi is set not simply of the an alternative mixture of primitive and you may derived attributes, and in addition by the presence of novel keeps in the femur and tibia. Like all most other bipedal hominins, H. naledi features an excellent valgus leg and you can varus ankle. Strength insertions toward M. gluteus maximus was solid plus the femur provides a well-marked linea aspera with pilaster variably establish. The brand new tibia is mediolaterally compacted having a circular prior border, a giant proximal accessory with the M. tibialis posterior, and you can a slimmer medial malleolus. The latest fibula is gracile which have laterally centered horizontal malleolus, a comparatively round shoulder and a convex epidermis to your proximal connection of one’s M. peroneus longus. Novel have about straight down limb of H. naledi are an anxiety from the superior aspect of the femoral neck you to causes one or two mediolaterally dependent pillars inferoposteriorly and you will superoanteriorly, and you will a strong distal connection of one’s pes anserinus toward tibia.
The fresh new foot and you may ankle out of H. naledi are largely humanlike (Profile nine). The fresh new tibia stands orthogonally through to the newest talus, that is sparingly wedged, which have a mediolaterally flat trochlea which have medial and you will lateral margins at the even peak, an application distinct from this new strong keeling seen in OH 8 (H. habilis) and many tali out-of Koobi Fora. The new talar direct and you may neck exhibit solid, humanlike torsion; the latest lateral position exceeds in most human beings, exactly like you to definitely utilized in australopiths. The brand new calcaneus is only sparingly sturdy, but and contains the new plantar declination of retrotrochlear eminence and you may plantarly organized horizontal plantar procedure included in one another progressive people and you will Bien au. afarensis. The latest peroneal trochlea is actually small, unlike that utilized in australopiths and you can equivalent only to you to in H. sapiens and you will Neanderthals. The fresh new talonavicular, subtalar bones and calcaneocuboid bones try humanlike for the having limited range of movement and research to have a locking, strict midfoot. Brand new advanced and you can lateral cuneiforms is actually proximodistally elongated. naledi had a keen adducted, non-gripping hallux. Your head of your own earliest metatarsal is actually mediolaterally longer dorsally, indicative out-of an effective humanlike windlass method. The fresh ft features humanlike metatarsal lengths, direct dimensions, and torsion.
The phalanges try moderately rounded, a bit moreso than in H. sapiens. The actual only real primitive anatomies based in the ft from H. naledi is the talar head and shoulder declination and you may sustentaculum tali angles, effective out-of less curved ft having a far more plantarly organized and horizontally more likely medial line than usually utilized in modern individuals (Harcourt-Smith et al., 2015).
Brand new axial skeleton gift suggestions a variety of derived (mainly regions of the fresh new spinal vertebrae) and you may seemingly primitive (generally this new ribs) attributes. The fresh managed adult T10 and T11 vertebrae was proportioned much like Pleistocene Homo, with transverse process morphology very like Neandertals. New neural canals ones spinal vertebrae try high when comparing to the newest diminutive overall sized the new spinal vertebrae, proportionally recalling Dmanisi H. erectus, Neandertals, and you may progressive human beings. The 11th rib are upright (uncurved), the same as Au. afarensis, therefore the model of the upper rib crate looks thin, given that assessed of first and you may second rib fragments, recommending that the thorax try pyramidal in shape. The fresh 12th equestrian dating service rib gift suggestions a powerful axle cross-point really like Neandertals. That it integration isn’t included in almost every other hominins and could reflect allometric scaling within a little trunk area proportions.
The fresh Dinaledi iliac blade is actually flared and you may reduced anteroposteriorly, like Bien au. afarensis or Au. africanus. The fresh new ischium are brief that have a slim tuberoacetabular sulcus, in addition to ischiopubic and you can iliopubic rami are heavy, like Bien au. sediba and you may H. erectus. Which combination of iliac and ischiopubic features wasn’t located various other traditional hominins (Shape 13).