Genus: Lonchognathosaurus MAISCH, MATZKE & SUN, 2004
Etymology: Greek, lonchos, "lance," Greek, gnathos, "jaw" and Greek, sauros, "lizard."
Species: acutirostris MAISCH, MATZKE & SUN, 2004
Etymology: Latin, acus, “needle” and Latin, rostrum, “snout.”
Holotype: SGP 2001/19
Locality: Liuhonggou, south-west of Urumqi, Junggar Basin, Xinjiang Uygur Zizhiqu (Sinkang) Province, northwest China.
Locality: Lower part of the Lianmuxin Formation, Upper Tugulu Group.
Age: ?Aptian or Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.
Material: Anterior part of a skull.
AUGUSTIN, MATZKE, MAISCH & PFRETZSCHNER, 2021
SGP 2001/19/A: A partial left forelimb, distal carpal, metacarpal IV, the proximal part of the first phalanx of the wing finter, complete second phalanx.