''Alligator olseni'' (common name Olsen's Alligator, named after

Russel Olsen Russel is an alternate spelling of Russell. Russel may also refer to: People *Russel Arnold (born 1973), Sri Lankan cricketer *Russel Crouse (1893–1966), American playwright *Russel Farnham (1784–1832), American frontiersman * Russel Honor ...

) is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

species of

alligator An alligator is a large reptile in the Crocodilia order in the genus ''Alligator'' of the family Alligatoridae. The two extant species are the American alligator (''A. mississippiensis'') and the Chinese alligator (''A. sinensis''). Additiona ...

. They lived in the Early Miocene period, around 20.4–15.97 million years ago and possibly earlier. Their range was principally in what is now known as

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

, United States, and possibly extending into southeastern

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

References

Alligatoridae Miocene reptiles of North America Fossil taxa described in 1942 {{paleo-archosaur-stub