New insights into the ontogeny of Paranthropus boisei offered by a juvenile maxilla from the Shungura Formation (Ethiopia) Author Thiebaut, Arthur Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo Sierra de Atapuerca 3, 09002 Burgos (Spain) and Laboratory Paleontology Evolution Paleoecosystems Paleoprimatology (PALEVOPRIM), CNRS & Université de Poitiers, 6 rue Michel Brunet, 86000 Poitiers (France) arthur.thiebaut@cenieh.es Author Guy, Franck Laboratory Paleontology Evolution Paleoecosystems Paleoprimatology (PALEVOPRIM), CNRS & Université de Poitiers, 6 rue Michel Brunet, 86000 Poitiers (France) franck.guy@univ-poitiers.fr Author Hlusko, Leslea J. Centro Nacional de Investigación sobre la Evolución Humana (CENIEH), Paseo Sierra de Atapuerca 3, 09002 Burgos (Spain) leslea.hlusko@cenieh.es Author Surault, Jérôme Laboratory Paleontology Evolution Paleoecosystems Paleoprimatology (PALEVOPRIM), CNRS & Université de Poitiers, 6 rue Michel Brunet, 86000 Poitiers (France) jerome.surault@univ-poitiers.fr Author Towle, Ian Monash Biomedicine Discovery Institute, Department of Anatomy and Developmental Biology, Monash University, 3168 Melbourne (Australia) ianetowle@hotmail.co.uk Author Redae, Blade E. Institute of Human Origins, School of Human Evolution and Social Change (SHESC), Arizona State University, 900 S Cady Mall, Tempe, AZ 85281 (United States) bredae@asu.edu Author Boisserie, Jean-Renaud French Centre for Ethiopian Studies (CFEE), CNRS & Ministry of Europe and Foreign Affairs, PO BOX 5554 Addis Ababa (Ethiopia) & Laboratory Paleontology Evolution Paleoecosystems Paleoprimatology (PALEVOPRIM), CNRS & Université de Poitiers, 6 rue Michel Brunet, 86000 Poitiers (France) jean. renaud. boisserie @ univ-poitiers. fr jean.renaud.boisserie@univ-poitiers.fr text Comptes Rendus Palevol 2026 2026-10-14 25 21 391 416 https://doi.org/10.5852/cr-palevol2026v25a21 journal article 316705 10.5852/cr-palevol2026v25a21 0ab4531e-2947-4ac3-a4e0-13fef8040168 1777-571X 23422227 urn:lsid:zoobank.org:pub:3B77581B-FB13-4AF9-A343-91DA6319CD44

APPENDIX 2. — Comparative specimens used for metrical comparison of OMO 362-10001 permanent dentition. Abbreviations: BL, bucco lingual; LL, labio lingual; MD, mesio distal.

Species	ID	Tooth	MD	BL/LL	Data from
New specimen	OMO 362-10001	C	–	8.3	This study
New specimen	OMO362-10001	P3	10.6	14.4	This study
New specimen	OMO361-10001	P4	12.7	16.9	This study
New specimen	OMO 362-10001	M1 original	14.7	15.5	This study
New specimen	OMO 362-10001	M1 rebuilt	14.16	14.7	This study
Paranthropus robustus	SK 4	C	8.9	10.3	Robinson 1956
Paranthropus robustus	DNH 53	C	9.9	10.9	Moggi-Cecchi et al. 2010
Paranthropus robustus	DNH 73	C	8.6	9.2	Moggi-Cecchi et al. 2010
Paranthropus robustus	SK 86	C	8.6	8.8	Robinson 1956
Paranthropus robustus	SK 93	C	8.5	9.6	Robinson 1956
Paranthropus robustus	DNH 17	P3	7.7	13.4	Robinson 1956
Paranthropus robustus	DNH 78	P3	9.7	12.8	Robinson 1956
Paranthropus robustus	SK 13	P3	9.8	13.2	Robinson 1956
Paranthropus robustus	SK 24	P3	9.6	14.1	Robinson 1956
Paranthropus robustus	SK 33	P3	10.5	15	Robinson 1956
Paranthropus robustus	SK 823	P3	10.3	14.2	Robinson 1956
Paranthropus robustus	DNH 22	P4	9.5	13.6	Moggi-Cecchi et al. 2010
Paranthropus robustus	DNH 59	P4	10.1	13.9	Moggi-Cecchi et al. 2010
Paranthropus robustus	SK 13	P4	10.5	15.1	Robinson 1956
Paranthropus robustus	SK 28	P4	10.5	15.3	Robinson 1956
Paranthropus robustus	SK 32	P4	11	15.6	Robinson 1956
Paranthropus robustus	DNH 4	M1	14.1	15.2	Moggi-Cecchi et al. 2010
Paranthropus robustus	DNH 14	M1	11.6	14.4	Moggi-Cecchi et al. 2010
Paranthropus robustus	DNH 57b	M1	12.7	13.6	Moggi-Cecchi et al. 2010
Paranthropus robustus	DNH 60	M1	12.5	13.6	Moggi-Cecchi et al. 2010
Paranthropus robustus	KW 10840	M1	12.9	14	Braga et al. 2023
Paranthropus robustus	KW 9000	M1	15.1	14.8	Braga et al. 2023
Paranthropus robustus	SK 13	M1	13.4	15	Robinson 1956
Paranthropus robustus	SK 829	M1	13.3	14.4	Robinson 1956
Paranthropus robustus	SK 832	M1	14	14.8	Robinson 1956
Paranthropus robustus	SK 838	M1	14.3	14.9	Robinson 1956
Paranthropus robustus	SK 89	M1	14.6	15	Robinson 1956
Paranthropus boisei	KNMT 37744	C	8.7	9.3	Prat et al. 2003
Paranthropus boisei	KNM-WT 17400	C	8.3	8.2	Leakey & Walker 1988
Paranthropus boisei	OH 5	C	8.8	9.9	Tobias 1991
Paranthropus boisei	OH 30	C	8.4	8.4	Tobias 1991
Paranthropus boisei	OMO 323-76-896	C	11	9.6	Alemseged et al. 2002
Paranthropus boisei	KNM-CH 1	P3	10.2	13.9	Wood 1991
Paranthropus boisei	KNM-ER 1804	P3	11.3	16.1	Wood 1991
Paranthropus boisei	KNM-ER 802	P3	12	14.2	Wood 1991
Paranthropus boisei	KNM-ER 6128	P3	10.6	15.3	Wood 1991
Paranthropus boisei	KNM-WT 17400	P3	10.6	15.05	Wood 1991
Paranthropus boisei	OH 5	P3	10.9	17	Tobias 1967
Paranthropus boisei	OH 80-2	P3	10.4	16.2	Domínguez-Rodrigo et al. 2013
Paranthropus boisei	KNM-CH 1	P4	11.6	15.8	Wood 1991
Paranthropus boisei	KNM-ER 1804	P4	12.1	17.3	Wood 1991
Paranthropus boisei	KNM-ER 6128	P4	10.5	15.2	This Study
Paranthropus boisei	KNM-WT 17400	P4	11.75	15.65	Wood 1991
Paranthropus boisei	OH 5	P4	11.9	17.8	Tobias 1967
Paranthropus boisei	HCRP RC 911	M1	14.2	17.5	Kullmer et al. 1999
Paranthropus boisei	KGA10-506	M1	14.5	15.9	Suwa et al. 1997
Paranthropus boisei	KNM-CH 1	M1	14.2	14.9	Wood 1991
Paranthropus boisei	KNM-ER 1804	M1	15.4	16.3	This study
Paranthropus boisei	KNM-ER 733	M1	15.6	16.3	This study
Paranthropus boisei	KNM-WT 17400	M1	13.65	15.65	Wood 1991
Paranthropus boisei	KNM-WT 37747	M1	14.6	15.9	Prat et al. 2003
Paranthropus boisei	OH 5	M1	15.2	17.7	Tobias 1967
Homo erectus	KNMWT 15000	C	10.45	11.35	This study
Homo erectus	Bpg 2001.04	P3	8.1	11.3	Zaim et al. 2011
Homo erectus	D 2700	P3	8.6	11.6	Martinón-Torres et al. 2008
Homo erectus	KNM-ER 1808	P3	8.5	12.8	This study
Homo erectus	KNM-ER 3733	P3	8.5	12	This study
Homo erectus	KNM-WT 15000	P3	8.7	11.7	Kimbel et al. 1997
Homo erectus	Pithecanthropus IV	P3	8.4	12.3	Tobias & von Koenigswald 1964
Homo erectus	S 7-27	P3	7.8	10.4	Zaim et al. 2011
Homo erectus	S 7-31	P3	7.9	10.6	Zaim et al. 2011
Homo erectus	S 7-32	P3	7.9	10.8	Zaim et al. 2011
Homo erectus	S 7-35	P3	8.5	12.2	Zaim et al. 2011
Homo erectus	S 7-58	P3	9.1	11.5	Zaim et al. 2011
Homo erectus	Sangiran 15B	P3	7.5	10.1	Jacob 1973
Homo erectus	Sangiran 16	P3	7.1	9.9	Zaim et al. 2011
Homo erectus	Sangiran 17	P3	7.2	10.6	Zaim et al. 2011
Homo erectus	Sangiran 27	P3	8.9	12.8	Zaim et al. 2011
Homo erectus	Sangiran 4	P3	8.4	12.4	Zaim et al. 2011
Homo erectus	Sh.y. 003	P3	8.7	12.4	Xing et al. 2016
Homo erectus	Bpg 2001.04	P4	7.6	12.2	Zaim et al. 2011
Homo erectus	D 2700	P4	7	11.5	Martinón-Torres et al. 2008
Homo erectus	KNM-ER 3733	P4	8.1	12.1	Kimbel et al. 1997
Homo erectus	KNM-WT 15000	P4	8.3	11.75	Walker & Leakey 1993
Homo erectus	PA 636	P4	9.2	12.7	Xing et al. 2021
Homo erectus	Pithecanthropus IV	P4	8.2	12	Tobias & von Koenigswald 1964
Homo erectus	S 7-29	P4	8.2	10.3	Zaim et al. 2011
Homo erectus	S 7-30	P4	7.9	10.2	Zaim et al. 2011
Homo erectus	S 7-3a,b,c	P4	7.3	10.2	Zaim et al. 2011
Homo erectus	Sangiran 15A	P4	7.8	11	Jacob 1973
Homo erectus	Sangiran 27	P4	7.3	12.4	Zaim et al. 2011
Homo erectus	Sangiran 4	P4	8.4	12.2	Zaim et al. 2011
Homo erectus	Sh.y. 007	P4	7.9	11.2	Xing et al. 2016
Homo erectus	Sh.y. 0071	P4	8.2	12.3	Xing et al. 2016
Homo erectus	Bpg 2001.04	M1	12.5	13.5	Zaim et al. 2011
Homo erectus	D 2700	M1	12.98	12.2	Martinón-Torres et al. 2008
Homo erectus	D 2710	M1	13	12.9	Martinón-Torres et al. 2008
Homo erectus	KGA 11-350	M1	12	12.8	Suwa et al. 2007
Homo erectus	KNM-WT 15000	M1	12.2	12.2	Kimbel et al. 1997
Homo erectus	PA 637	M1	12.9	13.9	Xing et al. 2021
Homo erectus	Pithecanthropus IV	M1	12.1	13.6	Tobias & von Koenigswald 1964
Homo erectus	S 7-10	M1	11.6	12	Zaim et al. 2011
Homo erectus	S 7-37	M1	11.4	12.5	Zaim et al. 2011
Homo erectus	S 7-38	M1	12.8	13.9	Zaim et al. 2011
Homo erectus	S 7-3a,b,c	M1	11	12.5	Zaim et al. 2011
Homo erectus	S 7-40	M1	13.6	13.8	Zaim et al. 2011
Homo erectus	S 7-8	M1	11.5	12.6	Zaim et al. 2011
Homo erectus	S 7-9	M1	12	13.4	Zaim et al. 2011
Homo erectus	Sangiran 17	M1	10.8	12.6	Zaim et al. 2011
Homo erectus	Sangiran 27	M1	11.9	14.5	Zaim et al. 2011
Homo erectus	Sangiran 4	M1	12.2	13.6	Zaim et al. 2011
Homo habilis	AL 666-1	C	10.4	10.2	Kimbel et al. 1997
Homo habilis	KMER 803	C	9.3	8.5	Walker & Leakey 1993
Homo habilis	OH 15	C	10.5	11.8	Tobias 1991
Homo habilis	OH 16	C	10	9.8	Tobias 1991
Homo habilis	OH 39	C	9.5	9.1	Tobias 1991
Homo habilis	AL 666-1	P3	9.2	12.5	Kimbel et al. 1997
Homo habilis	KNM-ER 1506	P3	8.3	11.9	Wood 1991
Homo habilis	KNM-ER 1590	P3	10.5	13.55	Wood 1991
Homo habilis	KNM-ER 1805	P3	8.1	11.75	Wood 1991
Homo habilis	KNM-ER 1813	P3	8.1	11.3	Wood 1991
Homo habilis	KNM-ER 808	P3	8.8	12.5	Wood 1991
Homo habilis	OH 13	P3	9.1	11.25	Tobias 1991
Homo habilis	OH 16	P3	10	12.25	Tobias 1991
Homo habilis	OH 24	P3	9.5	12.2	Tobias 1991
Homo habilis	OH 39	P3	8.85	11.1	Tobias 1991
Homo habilis	OH 65	P3	9.3	12.7	Blumenschine et al. 2003
Homo habilis	AL 666-1	P4	9	12.6	Kimbel et al. 1997
Homo habilis	KNM-ER 1506	P4	9	12.1	This study
Homo habilis	KNM-ER 1590	P4	10.7	13.7	This study
Homo habilis	KNM-ER 1805	P4	8.6	11	This study
Homo habilis	KNM-ER 1813	P4	8.7	11.4	This study
Homo habilis	OH 13	P4	8.9	11.4	Tobias 1991
Homo habilis	OH 16	P4	9.85	12.05	Tobias 1991
Homo habilis	OH 24	P4	10.2	12.5	Tobias 1991
Homo habilis	OH 39	P4	8.6	10.95	Tobias 1991
Homo habilis	OH 65	P4	9.05	13.05	Blumenschine et al. 2003
Homo habilis	AL 666-1	M1	12.9	12.4	Kimbel et al. 1997
Homo habilis	KNM-ER 1590	M1	14.1	14.2	This study
Homo habilis	KNM-ER 1805	M1	13.2	13.2	This study
Homo habilis	KNM-ER 1813	M1	12.1	12.6	This study
Homo habilis	KNM-ER 807	M1	12.6	13.8	Kimbel et al. 1997
Homo habilis	OH 13	M1	12.8	12.7	Tobias 1991
Homo habilis	OH 16	M1	14.7	13.7	Tobias 1991
Homo habilis	OH 21	M1	12.2	11.9	Tobias 1991
Homo habilis	OH 24	M1	13.5	13.15	Tobias 1991
Homo habilis	OH 39	M1	11.2	12	Tobias 1991
Homo habilis	OH 41	M1	13.3	14.1	Tobias 1991
Homo habilis	OH 44	M1	12.9	12.6	Tobias 1991
Homo habilis	OH 45	M1	13.5	13.1	Tobias 1991
Homo habilis	OH 6	M1	13.3	12.4	Tobias 1991
Homo habilis	OH 65	M1	12.75	13.55	Blumenschine et al. 2003