Geometric morphometrics and paleoproteomics enlighten the paleodiversity of Pongo
Kubat, Jülide (Université Paris Cité)
Paterson, Ryan (University of Copenhagen. Globe Institute)
Patramanis, Ioannis (University of Copenhagen. Globe Institute)
Barker, Graeme (University of Cambridge. McDonald Institute for Archaeological Research)
Demeter, Fabrice (University of Copenhagen. Globe Institute)
Filoux, Arnaud (Mahasarakham University. Palaeontological Research and Education Centre)
Kullmer, Ottmar (Senckenberg Research Institute and Natural History Museum Frankfurt. Department of Palaeoanthropology)
Mackie, Meaghan (University of Copenhagen. Globe Institute)
Marques-Bonet, Tomas 1975- (Institut Català de Paleontologia Miquel Crusafont)
Nguyen, Huong Thi Mai (Institute of Archaeology. Anthropological and Palaeoenvironmental Department (Vietnam))
Nguyen, Anh Tuan (Institute of Archaeology. Anthropological and Palaeoenvironmental Department (Vietnam))
Sytha, Pheng (Royal University of Fine Arts (Cambodia))
Rippengal, Jessica (University of Cambridge. McDonald Institute for Archaeological Research)
Schrenk, Friedemann (Senckenberg Research Institute and Natural History Museum Frankfurt. Department of Palaeoanthropology)
Souksavatdy, Viengkeo (Lao People's Democratic Republic. Department of Heritage, Ministry of Information, Culture and Tourism, Vientiane)
Lim, Tze Tshen (Universiti Malaya. Department of Geology)
Wattanapituksakul, Athiwat (Mahasarakham University. Palaeontological Research and Education Centre)
Wang, Wei (Shandong University. Institute of Cultural Heritage)
Zanolli, Clément (Université de Bordeaux)
Cappellini, Enrico (University of Copenhagen. Globe Institute)
Bacon, Anne-Marie (Université Paris Cité)

Data:	2023
Resum:	Pleistocene Pongo teeth show substantial variation in size and morphology, fueling taxonomic debates about the paleodiversity of the genus. We investigated prominent features of the enamel-dentine-junction junction (EDJ)-phylogenetically informative internal structures-of 71 fossil Pongo lower molars from various sites by applying geometric morphometrics and conducted paleoproteomic analyses from enamel proteins to attempt to identify extinct orangutan species. Forty-three orangutan lower molars representing Pongo pygmaeus and Pongo abelii were included for comparison. The shape of the EDJ was analyzed by placing five landmarks on the tip of the main dentine horns, and 142 semilandmarks along the marginal ridges connecting the dentine horns. Paleoproteomic analyses were conducted on 15 teeth of Late Pleistocene Pongo using high-resolution tandem mass spectrometry. The geometric morphometric results show variations in EDJ shape regarding aspects of the height and position of the dentine horns and connecting ridges. Despite the issue of molar position and sample size, modern molars are distinguished from fossil counterparts by their elongated tooth outline and narrowly positioned dentine horns. Proteomic results show that neither a distinction of P. pygmaeus and P. abelii, nor a consistent allocation of fossil specimens to extant species is feasible. Based on the EDJ shape, the (late) Middle to Late Pleistocene Pongo samples from Vietnam share the same morphospace, supporting the previous allocation to P. devosi, although substantial overlap with Chinese fossils could also indicate close affinities with P. weidenreichi. The hypothesis that both species represent one chronospecies cannot be ruled out. Two fossil specimens, one from Tam Hay Marklot (Laos, Late Pleistocene), and another from Sangiran (Java, Early to Middle Pleistocene), along with some specimens within the Punung sample (Java), exhibit affinities with Pongo abelii. The Punung fossils might represent a mix of early Late Pleistocene and later specimens (terminal Pleistocene to Holocene) related to modern Pongo. The taxonomy and phylogeny of the complete Punung sample needs to be further investigated.
Ajuts:	European Commission 861389 European Commission 101021361
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Plos One, Vol. 18, Num. 12 (December 2023) , art. e0291308

DOI: 10.1371/journal.pone.0291308
PMID: 38100471

28 p, 2.3 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Paleontologia Miquel Crusafont (ICP)
Articles > Articles de recerca
Articles > Articles publicats