The new ichnotaxon Eubrontes nobitai ichnosp. nov. and other saurischian tracks from the Lower Cretaceous of Sichuan Province and a review of Chinese Eubrontes-type tracks

Xing, Li-Da; Lockley, Martin G.; Klein, Hendrik; Zhang, Li-Jun; Romilio, Anthony; Scott Persons, W.; Peng, Guang-Zhao; Ye, Yong; Wang, Miao-Yan

doi:10.1186/s42501-021-00096-y

Journal of Palaeogeography

Table 2 Measurement element comparison of Eubrontes from China, Europe and America

From: The new ichnotaxon Eubrontes nobitai ichnosp. nov. and other saurischian tracks from the Lower Cretaceous of Sichuan Province and a review of Chinese Eubrontes-type tracks

Specimens	Age	L/W	M	II–IV	II/III	III/L	Reference	Interpretive outline drawing
America
Eubrontes giganteus (type)	J1	1.7	0.58	48°	0.76	0.67	Lockley 2009	Fig. 6a
Eubrontes giganteus	J1	1.6	0.53	46°	0.80	0.63	Olsen et al. 1998	Fig. 6b
Utah Eubrontes 1	J1	1.5	0.48	53°	0.73	0.71	Lockley et al. 1998	Fig. 6c
Utah Eubrontes 2 (T3)	J1	1.3	0.44	46^o	0.81	0.60	Lockley et al. 2021	Fig. 6d
Connecticut Eubrontes	J1	1.3	0.44	56°	—	0.64	Ishigaki and Fujisaki 1989	Fig. 6e
Eubrontes (?) glenrosensis	K1	1.3	0.36	56°	—	0.54	Adams et al. 2010	Fig. 6f
Europe
Eubrontes veillonensis	J1	1.5	0.50	49°	0.57	0.62	de Lapparent and Montenat 1967	Fig. 6g
China
Eubrontes pareschequier	J1	1.3	0.51	58°	0.68	0.66	Xing et al. 2009a, 2014b	Fig. 6h
Eubrontes zigongensis	J1	1.4	0.49	55°	0.74	0.66	Xing et al. 2014c	Fig. 6i
Eubrontes platypus Xiyang specimen	J1	1.3	0.43	57°	—	0.71	Hitchcock 1858; Yang and Yang 1987	Fig. 6j
Eubrontes monax	J1	1.2	0.49	65^o	—	0.74	Zhen et al. 1986; Lockley et al. 2013	Fig. 6k
Eubrontes xiyangensis	J1	1.8	0.68	46°	—	0.74	Zhen et al. 1986; Lockley et al. 2013	Fig. 6l
Changpeipus carbonicus	J1-2	1.6	0.46	50°	0.66	0.63	Xing et al. 2014b	Fig. 6m
Eubrontes nianpanshanensis	J2	1.1	0.37	64°	0.81	0.62	Xing et al. 2016b	Fig. 6n
Lufengopus dongi	J2	1.1	0.29	63°	0.96	0.61	Lü et al. 2006; Xing et al. 2014d	Fig. 6o
Eubrontes (?) glenrosensis Hailiutu specimen	J2	1.0	0.47	80°	0.70	—	Li et al. 2010; Xing et al. 2021	Fig. 6p
Lockleypus luanpingeris	K1	1.3	0.56	66°	0.73	0.61	Xing et al. 2018e	Fig. 6q
Chapus lockleyi	K1	1.3	0.48	53°	0.68	0.60	Li et al. 2006	Fig. 6r
Asianopodus pulvinicalyx	K1	1.4	0.45	55°	0.91	0.57	Matsukawa et al. 2005	Fig. 6s
Asianopodus robustus	K1	1.2	0.40	58°	0.87	0.56	Li et al. 2011; Lockley et al. 2018	Fig. 6t
Eubrontes nobitai	K1	1.4	0.37	47°	0.85	0.65	This study	Fig. 6u
Eubrontes HX-T3	K1	1.4	0.37	56°	0.69	0.68	Xing et al. 2015b	Fig. 6v
Eubrontes BJA-T4	K1	1.4	0.46	51°	0.75	0.69	Xing et al. 2016c	Fig. 6w

Abbreviation: L/W The length/width ratio, M Mesaxony, II–IV The divarication angle between digit II and digit IV, II/III The digit II/digit III length ratio, III/L The digit III/footprint length ratio

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