Table 2.
Measurements (in mm) for cranial bones of pachypleurosauroids with relatively complete skeletons.
| Taxon | PL | SL | HL | ML | PL/SL | HL/ML | Specimen |
|---|---|---|---|---|---|---|---|
| Dianmeisaurus gracilis | 6.1 | 24.0 | 4.6 | 27.0 | 25.4% | 17.0% | IVPP V18630 |
| Diandongosaurus acutidentatus | 10.5 | 23.3 | ? | 27.0 | 45.1% | ? | IVPP V17761 |
| Diandongosaurus cf. acutidentatus | 29.0 | 63.3 | 10.9 | 69.0 | 45.8% | 16.1% | WIGM SPC V1105 |
| Dawazisaurus brevis | 16.0 | 41.2 | ? | 50.0 | 38.8% | ? | NMNS000933-F034397 |
| Panzhousaurus rotundirostris | 4.5 | 20.1 | ? | 23.0 | 22.4% | ? | GMPKU- P-1059 |
| Keichousaurus hui | 6.8 | 23.3 | 3.8 | 26.4 | 29.2% | 14.4% | NMNS CYN2005-12 |
| Dianopachysaurus dingi | 7.5 | 19.7 | ? | 26.3 | 38.1% | ? | LPV 31,365 |
| Anarosaurus pumilio | 18.5 | 38.0 | ? | 47.0 | 48.7% | ? | M4/12 |
| Neusticosaurus pusillus | 12.5 | 29.0 | 4.7 | 31.6 | 43.1% | 14.9% | PIMUZ T3934 |
| Serpianosaurus mirigiolensis | 19.9 | 41.7 | 6.6 | 46.9 | 47.7% | 14.1% | PIMUZ T3681 |
| Prosantosaurus scheffoldi | 21.9 | 48.0 | ? | 58.5 | 45.6% | ? | PIMUZ A/III 1274 |
| Qianxisaurus chajiangensis | 42.5 | 90.6 | ? | 99.0 | 46.9% | ? | NMNS-KIKO-F044630 |
| Honghesaurus longicaudalis | 15.8 | 33.0 | ? | 38.9 | 47.9% | ? | IVPP V30380 |
| Luopingosaurus imparilis | 23.5 | 42.7 | 4.5 | 46.2 | 55.0% | 9.7% | IVPP V19049 |
| Wumengosaurus delicatomandibularis | 54.0 | 84.7 | 7.0 | 98.0 | 63.8% | 7.1% | ZMNH M8758 |
HL, Hyoid length; PL, preorbital (snout) length; SL, skull length; ML, mandibular length; ?, unknown.