Original sentence: Ankalagon is the largest mesonychid known from the Paleocene of North America, and it provides the best evidence for sexual dimorphism in mesonychids.Ankalagon saurognathus is an extinct mesonychid mammal known from the Paleocene of New Mexico
Edited sentence: Ankalagon saurognathus is an extinct carnivorous mammal of the family Mesonychidae, subfamily Mesonychinae, endemic to North America during the Paleocene epoch (63.3—60.2 mya), existing for approximately.Known from the Paleocene of New Mexico, Ankalagon is the largest mesonychid known from the Paleocene of North America, and it provides the best evidence for sexual dimorphism in mesonychids