Towards the restoration of ancient hominid craniofacial anatomy: Chimpanzee morphology reveals covariation between craniometrics and facial soft tissue thickness
Abstract In modern humans, facial soft tissue thicknesses have been shown to covary with craniometric dimensions. However, to date it has not been confirmed whether these relationships are shared with non-human apes. In this study, we analyze these relationships in chimpanzees (Pan troglodytes) with the aim of producing regression models for approximating facial soft tissue thicknesses in Plio-Pleistocene hominid individuals. Using CT scans of 19 subjects, 637 soft tissue, and 349 craniometric measurements, statistically significant multiple regression models were established for 26 points on the face and head. Examination of regression model validity resulted in minimal differences between observed and predicted soft tissue thickness values. Assessment of interspecies compatibility using a bonobo (Pan paniscus) and modern human(Homo sapiens) subject resulted in minimal differences for the bonobo but large differences for the modern human. These results clearly show that (1) soft tissue thicknesses covary with craniometric dimensions inP. troglodytes, (2) confirms that such covariation is uniformly present in both extantHomoandPanspecies, and (3) suggests that chimp-derived regression models have interspecies compatibility with hominids who have similar craniometric dimensions toP. troglodytes. As the craniometric dimensions of early hominids, such as South African australopithecines, are more similar toP. troglodytesthan those ofH. sapiens, chimpanzee-derived regression models may be used for approximating their craniofacial anatomy. It is hoped that the results of the present study and the reference dataset for facial soft tissue thicknesses of chimpanzees it provides will encourage further research into this topic..
| Medienart: |
|
|---|
Preprint| Erscheinungsjahr: |
2023 |
|---|---|
| Erschienen: |
2023 |
| Enthalten in: |
bioRxiv.org - (2023) vom: 17. Okt. Zur Gesamtaufnahme - year:2023 |
|---|
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Campbell, Ryan M [VerfasserIn] |
|---|
| Links: |
Volltext [kostenfrei] |
|---|
| Themen: |
|---|
| doi: |
10.1101/2021.01.08.425868 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
XBI019700520 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | XBI019700520 | ||
| 003 | DE-627 | ||
| 005 | 20231205150420.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 210111s2023 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1101/2021.01.08.425868 |2 doi | |
| 035 | |a (DE-627)XBI019700520 | ||
| 035 | |a (biorXiv)10.1101/2021.01.08.425868 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Campbell, Ryan M |e verfasserin |0 (orcid)0000-0003-2630-1701 |4 aut | |
| 245 | 1 | 0 | |a Towards the restoration of ancient hominid craniofacial anatomy: Chimpanzee morphology reveals covariation between craniometrics and facial soft tissue thickness |
| 264 | 1 | |c 2023 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 520 | |a Abstract In modern humans, facial soft tissue thicknesses have been shown to covary with craniometric dimensions. However, to date it has not been confirmed whether these relationships are shared with non-human apes. In this study, we analyze these relationships in chimpanzees (Pan troglodytes) with the aim of producing regression models for approximating facial soft tissue thicknesses in Plio-Pleistocene hominid individuals. Using CT scans of 19 subjects, 637 soft tissue, and 349 craniometric measurements, statistically significant multiple regression models were established for 26 points on the face and head. Examination of regression model validity resulted in minimal differences between observed and predicted soft tissue thickness values. Assessment of interspecies compatibility using a bonobo (Pan paniscus) and modern human(Homo sapiens) subject resulted in minimal differences for the bonobo but large differences for the modern human. These results clearly show that (1) soft tissue thicknesses covary with craniometric dimensions inP. troglodytes, (2) confirms that such covariation is uniformly present in both extantHomoandPanspecies, and (3) suggests that chimp-derived regression models have interspecies compatibility with hominids who have similar craniometric dimensions toP. troglodytes. As the craniometric dimensions of early hominids, such as South African australopithecines, are more similar toP. troglodytesthan those ofH. sapiens, chimpanzee-derived regression models may be used for approximating their craniofacial anatomy. It is hoped that the results of the present study and the reference dataset for facial soft tissue thicknesses of chimpanzees it provides will encourage further research into this topic. | ||
| 650 | 4 | |a Biology |7 (dpeaa)DE-84 | |
| 650 | 4 | |a 570 |7 (dpeaa)DE-84 | |
| 700 | 1 | |a Vinas, Gabriel |4 aut | |
| 700 | 1 | |a Henneberg, Maciej |0 (orcid)0000-0003-1941-2286 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t bioRxiv.org |g (2023) vom: 17. Okt. |
| 773 | 1 | 8 | |g year:2023 |g day:17 |g month:10 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1101/2021.01.08.425868 |z kostenfrei |3 Volltext |
| 912 | |a GBV_XBI | ||
| 951 | |a AR | ||
| 952 | |j 2023 |b 17 |c 10 | ||