Table 2. Selected numbers and measurements.
| Measure/number/ratio specimen | PIMUZ T 4376 | PIMUZ T 1895 | BES SC 999 | BES SC 1016 | GPIT 1973/1 | PIMUZ T 4847 | |
|---|---|---|---|---|---|---|---|
| 1 | Skull length: distance between tip of snout and caudal edge of articular surface of quadrate | 405 | [455] | 522 | [530] | [585] | (710) |
| 2 | Jaw length: distance between tip of mandible and caudal edge of surangular | 412 | [475] | 532 | [550] | [600] | (743) |
| 3 | Snout length: distance between tip of snout and rostral border of orbit | 309 | [320] | [366] | [368] | 384 | [590] |
| 4 | Premaxillary length: distance between tip of snout and rostral tip of maxilla | 184 | [196] | 214 | [220] | / | / |
| 5 | Prenarial length: distance between tip of snout and rostral border of external naris | 224 | [238] | 270 | [275] | / | / |
| 6 | Snout ratio: snout length divided by jaw length | 0,75 | 0,67 | 0,69 | 0,67 | 0,59 | 0,79 |
| 7 | Premaxillary ratio: premaxillary length divided by jaw length | 0,45 | 0,41 | 0,40 | 0,40 | / | / |
| 8 | Prenarial ratio: prenarial length divided by jaw length | 0,54 | 0,51 | 0,51 | 0,50 | / | / |
| 9 | Orbital diameter: maximum (rostrocaudal) internal diameter of orbit | 67 | [78] | [88] | [92] | [98] | [130] |
| 10 | Orbital ratio: orbital diameter divided by jaw length | 0,16 | 0,16 | 0,17 | 0,17 | 0,16 | 0,17 |
| 11 | Estimated number of sclerotic plates | [15] | [16] | [16] | / | / | [17] |
| 12 | Internal diameter of the sclerotic ring (rostrocaudal) | 21 | [25] | [32] | / | / | [50] |
| 13 | External diameter of the sclerotic ring (rostrocaudal) | 51 | [58] | [63] | / | / | [80] |
| 14 | Internal diameter of the sclerotic ring (dorsoventral) | 17 | [26] | [28] | / | / | [45] |
| 15 | External diameter of the sclerotic ring (dorsoventral) | 38 | [58] | [57] | / | / | [73] |
| 16 | Parietal lenght along the midline | 36 | (45) | (48) | [50] | 58 | / |
| 17 | Frontal length along the midline | 49 | 55 | (61) | / | 71 | [110] |
| 18 | Lenght of caudal ramus of maxilla | (26,5) | 38 | [57] | (45) | (45) | / |
| 19 | Length of rostral ramus of maxilla | 81 | 83 | [110] | (95) | 138 | / |
| 20 | Lower jaw height at coronoid process | 27 | / | (59) | [57] | 47 | [69] |
| 21 | Surangular height at notch for the jugal | 25,5 | / | (43) | 42 | 41,5 | [56] |
| 22 | Length from the caudal margin of the naris to the rostral margin of the lower jaw | 156 | [220] | 237 | [300] | / | / |
| 23 | Length of the cheek region | 43 | [60] | 64 | [75] | / | / |
| 24 | Jaw depth at mid-length of the jaw | 14 | 23 | 22 | / | / | / |
| 25 | Sclerotic ratio (sclerotic diameter 13 divided by orbital diameter) | 0,31 | 0,32 | 0,36 | / | / | 0,38 |
| 26 | Mandibular ratio (jaw depth divided by jaw length) | 0,03 | 0,05 | 0,04 | / | / | / |
| 28 | Overall body length | (2,124) | / | 5,065 | / | / | / |
| 29 | Presacral length | [1,215] | [1,406] | 2,052 | / | / | (3,280) |
Note:
Selected numbers and measurements of each specimen of Besanosaurus leptorhynchus. Craniometric measures 1–10 are from McGowan & Motani (2003), 11–15 and 22–26 are from Dal Sasso & Pinna (1996), 16–21 are newly defined. Round brackets (*) indicate preserved but incomplete or deformed elements, square brackets [*] indicate estimated measurements of reconstructed elements.