Indosinosuchus potamosiamensis was named by Martin et al. (2018) [Indosinosuchus potamosiamensis is characterized by the following combination of characters (autapomorphies denoted with*): (1) maxillae touching the posteriorly positioned incisive foramen, which is flanked by a pair of foramina* (Fig. 4C); (2) long and pinched anterior processes of the nasal, reaching the level of the 14th–15th maxillary alveoli; (3) posterior processes of nasals approaching the orbits but not quite preventing prefrontal-frontal contact*; (4) four premaxillary alveoli; (5) 30 maxillary alveoli; and (6) 31 dentary alveoli; (7) parietal extending as a long triangle between the supratemporal fenestrae; (8) relatively small rostrum-to-skull length ratio (about 0.66); (9) supratemporal fenestra longer than wide, with a width-to-length ratio of about 0.57; and (10) small antorbital fenestra. Differs from Peipehsuchus teleorhinus in character (4) and IVPP RV 10098 in (2), (3), (7), and (8); from Teleosaurus cadomensis in (5), (6), and (9); from Steneosaurus bollensis, Steneosaurus gracilirostris, Steneosaurus leedsi, Platysuchus multiscrobiculatus, and Steneosaurus heberti in (4), (5), (6), and (9); from Steneosaurus larteti in (3) and (9); from Steneosaurus brevior in (3), (4), and (9); from Machimosaurus hugii in (1), (4), (5), (6), and (10); and from Lemmysuchus obtusidens in (1) and (10).]. Its type specimen is PRC-11, a skull (A complete skull with mandible), and it is a 3D body fossil. Its type locality is Phu Noi [Phu Kradung Formation], PNB layer, which is in a Tithonian/Berriasian fluvial siltstone/sandstone in the Phu Kradung Formation of Thailand.