The last eryopids: Clamorosaurus and Syndyodosuchus from the late Kungurian (Cisuralian, Permian) of Russia revisited Author Werneburg, Ralf NaturHistorisches Museum Schloss Bertholdsburg Schleusingen, Burgstrasse 6, D- 98553 Schleusingen, Germany Author Witzmann, Florian Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstraße 43, D- 10115 Berlin, Germany text Fossil Record 2024 2024-12-30 27 3 353 380 journal article 307022 10.3897/fr.27.e125460 6c2d8b15-b69f-4bb0-bc13-e49ec8e830f2 09729723-9CEC-4FBF-B0B1-FB8103534379

Table 2. Comparative measurements of adult eryopid skulls (largest and smallest values in bold; after Boy 1990; Werneburg 1997, 2007; Werneburg and Berman 2012; Werneburg et al. 2023, and the present study). Institutional abbreviations. — CM, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania; CMNH, Cleveland Museum of Natural History, Cleveland, Ohio; FMNH, Field Museum of Natural History, Chicago, Illinois; MCZ, Museum of Comparative Zoology of the Harvard University, Cambridge, Massachusetts; MHNA, Museum of Natural History, Autun, France; MMG, Museum für Mineralogie und Geologie, Dresden, Germany; NHMMZ / LS, Natural History Museum Mainz / State Collection of Natural History of Rhineland – Palatinate, Germany; NHMS, Naturhistorisches Museum Schloss Bertholdsburg, Schleusingen, Germany; NMMNH, New Mexico Museum of Natural History, Albuquerque, New Mexico; PIN, Paleontological Institute, Academy of Sciences, Moscow, Russia; UGKU, Urweltmuseum GEOSKOP / Lichtenberg Castle near Kusel, Germany. For anatomical abbreviations, see Fig. 2.

	Stenokranio boldi	Glaukerpeton avinoffi	Eryops sp. - MCZ 1914	Eryops megacephalus	Onchiodon thuringiensis	Onchiodon labyrinthicus	Actinodon frossardi	Clamorosaurus nocturnus	Clamorosaurus borealis	Syndyodosuchus tetricus
	NHM MZ / LS PW 2019 / 5025, / 5022	CM 8539, CMNH 11025	MCZ 1914	MCZ 1129, holo-type	NHMS-WP 2140 a	Boy (1990: Abb. 2 F)	MHNA 15/10/62, MMG FrP 1	PIN 1582/1	PIN 3950/1	PIN 570/40
S l in mm	247–270	230	333	364	285	160	111 –123	182	153	162
pS w / S l	0.92	0.99	0.94	0.94	1.06	1.07	1. 09– 10	1.04	1.08	1.01
mS w / S l	0.85–91	0.89	0.94	0.83	0.97	1.00	0.88–90	0.98	0.98	0.86
aS w / S l	0.47– 52	0.49–50	0.47	0.49	0.48	0.50	0.38	0.52	0.52	0.49
H w / S l	0.40–42	0.56	0.44	0.38	0.43	0.47	0.53–54	0.50	0.52	0.45
H l / S l	0.22–23	0.25–26	0.22	0.17	0.24	0.25	0. 27– 28	0.26	0.25	0.24
pS w / H l	3.95	3.88	4.71	5.13	4.45	4.28	3.58	3.94	4.26	4.26
PO l / S l	0.60–61	0.55	0.63	0.68	0.62	0.58	0.53 –54	0.57	0.60	0.60
IN w / S l	0.24–26	0.21	0.26	0.26	0.26	0.26	0.20 –23	0.22	0.27	0.32
IO w / S l	0.24–27	0.29	0.28	0.23	0.27	0.26	0.20 –21	0.21	0.21	0.23
O l / S l	0.17–19	0. 20– 21	0.15	0.14	0.15	0.18	0.18–19	0.16	0.14	0.12
La w / La l	0.51–54	0.35–49	0.30	0.40	0.62	0.35	0.35–37	0.49	0.54	0.30
Po w / Po l	0.8–1.0	0.8–1.0	1.06	1.20	0.80	1.23	0.9– 1.3	0.75	0.73	0.54
Ju w / S l	0.16	0.11	0.23	0.14	0.20	0.17	0.15–16	0.22	0.20	0.14
W w / S l	0.26	0.20 –22	0.28	0.26	0.31	0.32	0.28–29	0.30	0.26	0.27
Th l / S l	0.06	0.12	0.07	0.09	0.08	0.10	0.08–10	0.09	0.09	0.09
Qc l / S l	0.20	0.16	0.10	0.25	0.18	0.21	0.11	0.17	0.22	0.14