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How human is the hand of Homo naledi?

% of readers think this story is Fact. Add your two cents.


Very human,
is the answer.

Kivell et al 2015
described “The hand of Homo Naledi” (Fig 1), but they did not include a hand from Homo sapiens (Fig 2) for comparison. Nor did the authors apply PILs to their hand skeleton. PILs are helpful to compare joint alignments and misalignments in extremities while helping one see the Bauplan of phalangeal proportions as a whole unit, as they flex and extend.

Both oversights are repaired here.

Figure 1. The right manus of Homo naledi. Medial, transverse and lateral PILs added here. ” data-image-caption=”

Figure 1. The right manus of Homo naledi. Medial, transverse and lateral PILs added here.

” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg?w=300″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg?w=584″ class=”size-full wp-image-85024″ src=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg?w=584&h=578″ alt=”Figure 1. The right manus of Homo naledi. Medial, transverse and lateral PILs added here.” width=”584″ height=”578″ srcset=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg?w=584&h=578 584w, https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg?w=150&h=148 150w, https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg?w=300&h=297 300w, https://pterosaurheresies.files.wordpress.com/2024/03/homo.naledi.manus_.588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 1. The right manus of Homo naledi. Medial, transverse and lateral PILs added here.

Please note for yourself
the subtle proportional differences between the two manus examples (Figs 1, 2). The two are very close in every proportion.

Figure 2. Right hand of Homo sapiens. PILs added here. Compare to figure 1. ” data-image-caption=”

Figure 2. Right hand of Homo sapiens. PILs added here. Compare to figure 1.

” data-medium-file=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg?w=300″ data-large-file=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg?w=584″ class=”size-full wp-image-85022″ src=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg?w=584&h=543″ alt=”Figure 2. Right hand of Homo sapiens. PILs added here. Compare to figure 1.” width=”584″ height=”543″ srcset=”https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg?w=584&h=543 584w, https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg?w=150&h=140 150w, https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg?w=300&h=279 300w, https://pterosaurheresies.files.wordpress.com/2024/03/homo.human_.hand_.manus588.jpg 588w” sizes=”(max-width: 584px) 100vw, 584px” />

Figure 2. Right hand of Homo sapiens. PILs added here. Compare to figure 1.

Homo naledi lived ~300mya.
Wikipedia reports, “their classification with other Homo species remains unclear.” H naledi has a much smaller cranial capacity than humans.

References
Kivell TL  et al (7 co-authors) 2015. The hand of Homo naledi. Nature Communications DOI: 10.1038/ncomms9431

wiki/Homo_naledi


Source: https://pterosaurheresies.wordpress.com/2024/03/25/how-human-is-the-hand-of-homo-naledi/


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