Genus: Lonchognathosaurus MAISCH, MATZKE & SUN, 2004
Etymology: Greek, lance, 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.