''Deltasuchus'' ("delta crocodile") is a genus of neosuchian crocodyliform from the

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

, specifically in the

Woodbine Formation The Woodbine Group is a geological formation in east Texas whose strata date back to the Early to Middle Cenomanian age of the Late Cretaceous. It is the producing formation of the giant East Texas Oil Field (also known as the "Black Giant") fr ...

, which was a part of the Appalachian continent during the Cretaceous. It is known from one species, ''D. motherali'', named in 2017 by Thomas Adams, Christopher Noto, and Stephanie Drumheller. It was a large crocodyliform with an estimated total body length of . In 2021, new material was described, allowing ''Deltasuchus'' to be placed within the family Paluxysuchidae as the

sister taxon In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and ...

to ''

Paluxysuchus ''Paluxysuchus'' is an extinct genus of neosuchian crocodyliform known from the Early Cretaceous Twin Mountains Formation (late Aptian stage) of north-central Texas. It contains a single species, ''Paluxysuchus newmani''. ''Paluxysuchus'' is one ...

''.

References

Late Cretaceous crocodylomorphs of North America Fossil taxa described in 2017 Prehistoric pseudosuchian genera {{paleo-archosaur-stub