I'm concerned about the narrative I've been seeing about burial. All current and recent cultures have had some form of mortuary practice. To dig a hole, place a single intact body, and cover it up is only one pathway among a wide spectrum.
There is nothing about this burial pathway that is more "human", or more demonstrative of "symbolic culture", or "higher" than others. Communal burials, catacombs, creches, skull curation, sky burial, ritual cannibalism, and mummification are all human.
Single body burial is presently widespread around the world, and this owes much to traditions rooted in Islamic, Christian, and Jewish heritage, coupled with colonial and industrial economies. Burial marks status even in geographic regions where it was not historically practiced.
Archaeologists have a bad history of saying "modern human behavior" while employing an intensely Eurocentric idea of material culture. The debate over Paleolithic burial has systematically neglected non-Eurocentric practices or defined them as non-modern.
I think most archaeologists understand in theory that "modern human" or "symbolic behavior" mean nothing if those concepts are limited to the specific vision of an American funeral director. Yet I still see many responding as if burial is the test of humanity.
This leads to a scientific problem and a moral one. The scientific problem is the erection of an arbitrary "modern human" form of burial that accords only with a specific cultural practice that was rarely observed by most historic and prehistoric humans.
The moral problem is when we concede that readers of our work will limit their interest and empathy only to ancients who share their own cultural practices, and so we promote and dedicate attention to those cases, while ignoring or glossing over others.
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Anthropologists of the 1990s often did pygmy marmoset-to-gorilla regressions across primates to "predict" all kinds of things about extinct hominins. We don't teach this anymore, but the resulting myths are tenacious. One of those is "Dunbar's number". royalsocietypublishing.org/doi/10.1098/rs…
The idea was that brain size limits the number of social relationships you can have. Dunbar took a cross-primate regression of group size and brain size, and plotted humans. He surmised that the human brain should max out at around 150 social relationships. This isn't right.
Psychologists ran with this idea, trying to find all kinds of ways that 150 might make sense. But people are pretty variable in how they apportion their social lives. That didn't stop Silicon Valley types from encoding "Dunbar's number" into their social media worldview.
A hint of the social behavior of early Homo erectus comes from the earliest known #hominin to survive with near total loss of teeth, 1.8 million years ago. Some wild primates also survive years with little functional dentition. #paleoanthropology#FossilFriday
For years, anthropologists have looked at the survival of older people with tooth loss as a possible indication of social caring, empathy, and value of tradition and knowledge to social groups—once with Neandertals, more recently with H. erectus. #paleoanthropology
Some have criticized inferences about social care in these human relatives, by pointing out other primates that sometimes survive. This wild chimpanzee skull in the collection of the @goCMNH is a great example, with loss of all but one molar and premolars.
Out of yesterday's Neandertal ancestry-oriented papers, I am more focused on the Zlatý kůň analysis. The history of thinking about this partial skeleton and the way this paper changes that thinking has much to reveal about this moment in the science. doi.org/10.1038/s41559…
The Zlatý kůň skeleton was discovered in 1950 when a nearby limestone quarry blasted an opening into a previously unknown cave system. The skeletal remains and many artifacts were within a debris cone from a chimney going higher into the cave. doi.org/10.1007/978-1-…
From the beginning, it was unclear whether the skeleton and artifacts were associated. All appeared to have entered accidentally, falling from chambers above. This was not an occupation site. The human remains emerged over several excavation seasons.
The MH2 #hominin mandible is still being built, fragment by fragment, as pieces are recovered from Malapa and prepared in the lab. The skull of this adult Australopithecus sediba individual may be found within the breccia as well. #paleoanthropology
If you're following this series of illustrations, you may recognize that MH2 is my first repeat, as I earlier featured the MH2 pelvis. The Malapa skeletons are amazing examples of discovery, as each piece emerges from the site, it allows us to test new hypotheses.
Some scientists claimed that the difference between MH1 and MH2 mandibular ramus shape must mean that one is Australopithecus and one Homo. Ritzman and coworkers (2016) examined this, finding them compatible with normal within-species variation. dx.doi.org/10.1016/j.jhev…
Some say MSA/Middle Paleolithic hominins used ochre for sun protection, blocking any conclusions about marking or other symbolic uses. I say traditions of processing and using mineral pigments for sun protection are more complex and less universal than cosmetic uses.
Some archaeologists have focused on cosmetic uses of pigments, but it remains much more common to see ochre and other pigments framed in terms of "symbolic marking" or "marking".
Of course, cosmetics are used for symbolic marking, and also other kinds of marking, and much use of cosmetics across cultures is directed toward mimicry, enhancing the visual impact of features, or reducing the visual impact of features, not "symbolic" in a strict sense.
So, I've started tracking down the citations in this Magnetodeth paper. It will be a surprise to no one that the papers on genetic bottlenecks do not support the 42,000-year-ago event that the new paper says they do.
For example, the paper claims that thylacines underwent a bottleneck 42,000 years ago, citing Lauren White et al. 2018 doi.org/10.1111/jbi.13… That paper actually says 20,400 years.
In the Australian case, the cited papers note that extinctions had a regional pattern that began by 48,000 years ago, the number 42,000 refers to a particular Bayesian analysis and not actual last appearance dates (which are more dispersed) doi.org/10.1038/s41467…