A new dentition-based phylogeny of Litopterna (Mammalia: Placentalia) and ‘ archaic’ South American ungulates Author Püschel, Hans P. Millenium Nucleus Early Evolutionary Transitions of Mammals (EVOTEM), Red Palentológica U-Chile, Santiago, 7800003, Chile & School of GeoSciences, University of Edinburgh, Grant Institute, James Hutton Road, Edinburgh, EH 9 3 FE, United Kingdom hpuschelr@gmail.com Author Shelley, Sarah L. School of GeoSciences, University of Edinburgh, Grant Institute, James Hutton Road, Edinburgh, EH 9 3 FE, United Kingdom Author Williamson, Thomas E. New Mexico Museum of Natural History and Science, Albuquerque, NM 87104, United States Author Perini, Fernando A. Instituto de Ciência Biológicas, UFMG, BH 31270 - 901, Brazil Author Wible, John R. Section of Mammals, Carnegie Museum of Natural History, 5800 Baum Boulevard, Pittsburgh, PA 15206, United States Author Brusatte, Stephen L. School of GeoSciences, University of Edinburgh, Grant Institute, James Hutton Road, Edinburgh, EH 9 3 FE, United Kingdom text Zoological Journal of the Linnean Society 2024 2024-09-07 202 1 1 50 http://dx.doi.org/10.1093/zoolinnean/zlae095 journal article 308495 10.1093/zoolinnean/zlae095 34048ff1-d299-456e-937d-6827e12171bc 0024-4082 13774717

Table 3. Divergence-time means for each tip-dated Bayesian analysis, and the total mean and total maximum and minimum ages across all the tip-dated Bayesian analyses.Abbreviations:CA, common ancestor; H1, hypothesis 1 for the notoungulate paraconid (see methods); H2, hypothesis 2 for the notoungulate paraconid (see methods); N, constraint in the node for the common ancestor of SANUs between the K/Pg boundary and the oldest age for the kollpaniids of Tiumpampa (66–65.075 Mya); top, topological constraint in the analysis to make the topology similar to the one in the undated Bayesian analysis (see Material and methods). Maximum and minimum ages were based in the 95% HPD of the same node in different analyses.

Taxonomic groups	H1	H2	H1N	H2N	H1N top	H2N top	Total mean	Maximum	Minimum
Root	70.09	70.15	68.84	68.78	68.94	68.95	69.29	71.55	67.51
SANU-CA	68.85	68.94	65.91	65.91	65.94	65.95	66.92	70.48	65.66
Family Kollpaniidae	67.63	67.66	65.57	65.58	65.59	65.59	66.27	69.53	65.20
Order Astrapotheria	56.25	56.35	55.94	56.01	56.51	56.52	56.26	60.86	52.19
SANUs orders-CA	65.96	66.01	64.50	64.54	64.66	64.68	65.06	67.84	63.78
Order Litopterna (with notopterns)	63.57a	63.66a	63.40a	63.41a	63.97	63.99	63.67	65.17	63.2
Suborder Notopterna	-	-	-	-	63.65	63.66	63.66	64.12	63.28
Family Notonychopidae	-	-	-	-	63.32	63.32	63.32	63.63	63.2
Order Litopterna (without notopterns)	57.23a	57.32a	56.83a	56.82a	63.55	63.56	59.22	64.18	53.94
Family Adianthidae	43.58	43.86	43.21	43.32	47.52	47.8	44.88	55.44	41.24
Family Macraucheniidae	39.76	39.88	39.57	39.69	42.34	42.38	40.60	48.95	37.06
Superfamily Proterotherioidea	-	-	-	-	62.87	62.88	62.88	63.53	62.19
Family Proterotheriidae	32.19	32.32	31.83	31.85	34.76	34.84	32.97	43.37	27.06
Family Anisolambdidae	55.44a	55.36a	55.17a	55.11a	62.52	62.52	57.69	63.18	52.91
Subfamily Anisolambdinae	53.63a	53.61a	53.51a	56.35a	62.19	62.17	56.91	62.81	51.80
Family Sparnotheriodontidae	52.95	52.96	52.81	52.82	56.4	56.46	54.07	60.92	51.4
Sparnotheriodon-Notiolofos-CA	46.00	46.08	45.89	45.91	46.88	46.94	46.28	51.79	42.92