Fig 1.
Zuojiangia jingxiensis, paratype, FBD 2010080053, 92.2 mm SL; China: Guangxi: Pearl River.
Fig 2.
Ventral view of mouth of Zuojiangia jingxiensis, paratype, FBD 2010080053, 112.1 mm SL.
Abbreviations, rf: rostral fold, uj: upper jaw, ll: lower lip, rb: rostral barbell, mb: maxillary barbels, pg: postlabial grooves.
Fig 3.
Head skeleton and jaw of Zuojiangia jingxiensis holotype, KIZ 2012003910 (A–D), Cophecheilus bamen, KIZ 2015001867 (E–H), Prolixicheilus longisulcus, KIZ 20100064 (I–L), Parasinilabeo longibarbus, KIZ 20100007 (M–P), and Rectoris posehensis, KIZ 20170170 (Q–T). Abbreviations, pmx: premaxilla, mx: maxilla, den: dentary, lp: lateral process, aar: anguloarticular, ah: articular head, fp mx: fingerlike process of maxilla, ap pmx: ascending process of premaxilla. Scale bar: 4.0 mm in Q, R; 3.5mm in A, B, E, F; 3.0 mm in I, J, M, N; 2.0 mm in S, T; 1.5 mm in C, D, G, H, K, L, O, P.
Fig 4.
Pharyngeal dentition of Zuojiangia jingxiensis A–C, holotype, KIZ 2012003910; D–F, paratype, KIZ 2012003911; G–I, paratype, KIZ 2012005694. A, D, G, paired ceratobranchial 5 in anterior-oblique view. B, E, H, left ceratobranchial 5 in dorsal-oblique view. Scale bar: 1.5 mm. Abbreviations, “A”: main row of teeth; “B” medial secondary row, “C” most lateral secondary row, stars indicate replaced teeth.
Fig 5.
Oromandibular structures of Cophecheilus bamen, KIZ 2015001868, 87.0 mm SL (A), Prolixicheilus longisulcus, KIZ 20100064, 67.1 mm SL (B), Parasinilabeo longibarbus, KIZ 20100010, 50.3 mm SL (C), and Rectoris posehensis, KIZ 20170169, 120.0 mm SL (D). Abbreviations, rf: rostral fold, uj: upper jaw, ll: lower lip, rb: rostral barbell, mb: maxillary barbels, pg: postlabial grooves.
Table 1.
Morphometric data for Zuojiangia jingxiensis SD = standard deviation.
Fig 6.
Radiograph of Zuojiangia jingxiensis, paratype, KIZ 2012005694, 93.6 mm SL.
Fig 7.
Zuojiangia jingxiensis, alive, not preserved, about 100 mm SL, China: Guangxi: Pearl River.
Fig 8.
Maximum likelihood tree of Labeonini based on thirteen morphological characters.
The nodal numbers are bootstrap values (1000 replicates), and only values above 50% are given.