Thoracosaurus neocesariensis.
Three different crocodyomorphs are recorded form the Hell creek Formation. Thoracosaurus is the smallest . it was very garial like in appearance with a long thin extended snout. This is a fragment of the lower left jaw near the tip. Showing 5 tooth sockets. Unusual and rarely offered.
Cretaceous, Maastrichtian, Hell Creek Formation.
Montana, USA.
Jaw : 4.5 cm long.
