This is a really lovely, fat  tooth from the crocodiliform Sarchosuchus nicknamed Super Croc. 
 
Length of the tooth: 1.71 inches.
 
Sarchosuchus was huge, measuring up to 31 feet and weighing between 3.45- 4.3 tonnes.
 
Sarchosuchus's world would have consisted of floodplains, freshwater lakes, and woodlands. It would have shared these habitats with an assortment of other fauna ,including the theropod dinosaurs, including Eochacharia, Suchominus,  and Krytops.