Necrosuchus

Necrosuchus is an extinct genus of caiman from the Paleocene epoch (Selandian age, about 60 million years ago).
Description.
"Necrosuchus" had a long jaw, with slender teeth. The first two sets of teeth was large, the third is smaller, the fourth very large, the fifth through 10th small, the 11th through 13th increasing in size, with the 13th being nearly as large as the fourth, the remaining 14th through 18th teeth decrease in size.
Distribution.
Fossils of "N. ionensis" have been found in the Salamanca Formation near , in Argentina.
Etymology.
G. Simpson explains the meaning of the generic name as being a compound word of "necros" meaning "dead," and "suchus" meaning crocodile, in reference to during its collection, "a well-meaning lady asked if it were dead."