"Globidonta is a clade of alligatoroids that includes alligators, caimans, and closely related extinct forms. It is defined as a stem-based clade including Alligator mississippiensis (the ...
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American Alligator) and all forms more closely related to it than to Diplocynodon. The group´s fossil range extends back into the Late Cretaceous with early alligatoroids such as Albertochampsa and Brachychampsa. Extinct globidontans were particularly common in North America and Eurasia, and their modern range also includes South America. The oldest known globidontan is Acynodon from France, which is also the most basal." - (Wikipedia (en) 25.12.2020)
