Journal Article

IMPULSE-2024-00154

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Molar enamel–dentine junction shape of Pliobates cataloniae and other Iberian pliopithecoids

Bouchet, F. (Corresponding author) ; Zanolli, C. ; Skinner, M. M. ; Urciuoli, A. ; Fortuny, J. ; Almécija, S. ; Bernardini, F. ; Tuniz, C. ; Schillinger, B.MLZ* ; Moyà-Solà, S. ; Alba, D. M.

2024
Elsevier Amsterdam [u.a.]

Please use a persistent id in citations: doi:10.1016/j.jhevol.2024.103581

Abstract: The phylogenetic relationships of the small-bodied catarrhine Pliobates cataloniae (~11.6 Ma, NE IberianPeninsula) have been controversial since its original description. However, the recent report of additionaldentognathic remains has supported its crouzeliid pliopithecoid status. Based on the available hypodigm, themolar enameledentine junction (EDJ) shape of P. cataloniae is compared with that of other pliopithecoidsfrom the same basin as well as both extinct and extant hominoids to further evaluate its pliopithecoid affinities.We also quantitatively compare the EDJ shape among these taxa bymeans of landmark-based threedimensionalgeometricmorphometrics using principal component analysis (PCA), canonical variate analysis,and between-group PCA. Permutation tests are performed to test whether Pliobates variation exceeds that ofextant hominoid genera. Results indicate that Pliobates is similar inmolar EDJ shape to other pliopithecoids,particularly crouzeliids. The variation displayed by Pliobates upper molars is less marked at the EDJ level thanat the outer enamel surface, probably owing to differential enamel wear and intraspecific differences inenamel thickness.Multivariate analyses of EDJ shape showthat all pliopithecoids (including Pliobates) clustertogether in the PCAs, canonical variate analyses, and between-group PCAs and occupy a different portion ofthe morphospaces fromextinct and extanthominoids. Posterior and typicality probabilities strongly supportthe classification of Pliobates as a pliopithecoid, wheras permutation tests fail to reject the single-genushypothesis for the P. cataloniae hypodigm. We conclude that P. cataloniae is a crouzeliid pliopithecoid, asrecently supported by cladistic analyses of craniodental characters, and that previous cladistic results thatsupported a stemhominoid status are attributable to postcranial convergences with crown hominoids. Ourresults further highlight the potential of three-dimensional geometric morphometrics analyses of the EDJshape for better informing fossil primate alpha-taxonomy by means of quantitatively testing hypothesesabout tooth shape variation.

Keyword(s): Earth, Environment and Cultural Heritage (1st) ; Archaeology/Museums/Arts (2nd)

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Contributing Institute(s):

1. ANTARES (ANTARES)

Experiment(s):

1. ANTARES: Cold neutron radiography and tomography station (SR4a)

Appears in the scientific report 2024

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Database coverage:
; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Current Contents - Social and Behavioral Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Social Sciences Citation Index ; Web of Science Core Collection ; Zoological Record

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