Table 2. Indosinosuchus: diagnostic comparison.

Comparison table of diagnostic characters among Indosinosuchus species.

Morphological character	I. potamosiamensis (PRC 11, 12, 238 and 240)	Junior synonym of I. potamosiamensis (PRC 239)	I. peninsularensis sp. nov. (PRC 205–206)
No. of premaxillary alveoli	4	4	4
Premaxilla shape	Moderately expanded laterally; subequal in length & width	Similar to I. potamosiamensis after re-examination	Moderately expanded, subequal length & width, broad but unflared
External nares	Slightly 8-shaped in anterior view	Slightly 8-shaped; “B-shape” taphonomic.	Subcircular to slightly 8-shaped in anterior view (*)
Incisive foramen	Present	Present	Absent (*)
Anterior tip of nasals	Reaches 14th–15th maxillary alveolus	Reaches 14th–15th maxillary alveolus	Reaches 18th maxillary alveolus (*)
Rostrum proportions	Subequal height and width (within ±10%)	Subequal height and width (within ±10%)	Broader than tall (lateromedial axis >dorsoventral by >10%)
Maxillary lateral margins	Gradually expand laterally at nasal tip	Gradually expand laterally at nasal tip	Straight, parallel up to nasal tip (*)

Notes.

^*Autapomorphic characters for I. peninsularensis sp. nov.