According to a new study, what was once thought to be one species Deinosuchus hatcheri may have been as many as 3 species. This new study is linked in the attached article which is a good read
Deinosuchus hatcheri
Deinosuchus riograndensis
Deinosuchus schwimmeri
https://www.hakaimagazine.com/news/when-deinosuchus-ruled-the-earth/