6.6 Genus Praeaulacus Rasnitsyn, 1972 †

Praeaulacus: Rasnitsyn, 1972: 72 [diag.] Li et al., 2018: 832 [rediag.].

Type species: Praeaulacus ramosus Rasnitsyn, 1972 .

Number of valid species from China: 12.

(1) Praeaulacus afflatus Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus afflatus: Zhang & Rasnitsyn, 2008: 466 [in key], 473 [Pl. 3, fig. 1], 474 [descr., holotype: NND0759/ NIGP 148224a, NND0760/ NIGP 148224b, fig. 8]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).

(2) Praeaulacus byssinus Wang, Li & Shih, 2015 —Late Middle Jurassic.

Praeaulacus byssinus: Wang et al., 2015: 477–479 [descr., holotype, ♀, CNU -HYM-NN-2012038], 479 [in key] .

Distribution: China (Inner Mongolia) (Wang et al. 2015).

(3) Praeaulacus daohugouensis Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus daohugouensis: Zhang & Rasnitsyn, 2008: 466 [in key], 468 [Pl. 1, fig. 2], 469 [descr., holotype: NND0261/ NIGP 148217a, NND0262/ NIGP 148217b, fig. 3]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).

(4) Praeaulacus exquisitus Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus exquisitus: Zhang & Rasnitsyn, 2008: 465 [in key], 469–471 [descr., holotype: NND2088/ NIGP 148220a, NND2089/ NIGP 148220b; Pl. 2, fig. 3; fig. 4]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).

(5) Praeaulacus obtutus Li & Shih, 2014 —Middle Jurassic.

Praeaulacus obtutus: Li & Shih, 2014: 1–6 [descr. figs. 1–2, holotype, CNU -HYM-NN-2012039P/C] .

Distribution: China (Inner Mongolia) (Li & Shih 2014).

(6) Praeaulacus orientalis Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus orientalis: Zhang & Rasnitsyn, 2008: 465 [in key, fig. 1], 467 [descr., holotype: NND0758/ NIGP 148216a, NND0711/ NIGP 148216b], 468 [Pl. 1, fig. 1]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).

(7) Praeaulacus rectus Li, Shih & Ren, 2018 —Late Middle Jurassic.

Praeaulacus rectus: Li et al., 2018: 832–833 [descr., fig. 21, holotype, ♂, CNU -HYM-NN-2015002] .

Distribution: China (Inner Mongolia) (Li et al. 2018).

(8) Praeaulacus robustus Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus robustus: Zhang & Rasnitsyn, 2008: 466 [in key], 472–474 [descr., holotype: NND0620/ NIGP 148223, fig.7; Pl. 3, fig. 4]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).

(9) Praeaulacus scabratus Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus scabratus: Zhang & Rasnitsyn, 2008: 466 [in key], 470 [Pl. 2, fig. 5], 471 [descr., holotype: NND2015/ NIGP 148221a, NND2016/ NIGP 148221b, fig.5]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).

(10) Praeaulacus subrhombeus Li, Shih & Ren, 2014 —Middle Jurassic.

Praeaulacus subrhombeus: Li et al., 2014b: 435 [descr., holotype, ♀, CNU -HYM-NN-2012034P/C], 436 [fig. 2], 437 [fig. 3], 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Li et al. 2014b).

(11) Praeaulacus tenellus Li, Shih & Ren, 2014 —Middle Jurassic.

Praeaulacus tenellus: Li et al., 2014b: 437–439 [descr., holotype, ♀, CNU -HYM-NN-2012035P/C. fig. 4-5], 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Li et al. 2014b).

(12) Praeaulacus sculptus Zhang & Rasnitsyn, 2008 —Middle Jurassic.

Praeaulacus sculptus: Zhang & Rasnitsyn, 2008: 465 [in key], 472 [descr., holotype: NND0542/ NIGP 148222, fig.6; Pl. 2, fig. 4]; Li et al., 2014b: 440 [in key]; Wang et al., 2015: 479 [in key].

Distribution: China (Inner Mongolia) (Zhang & Rasnitsyn 2008).