Rio Piranhas Formation

The Rio Piranhas Formation is a Berriasian to Hauterivian geologic formation in Paraíba, Brazil. Fossil ornithopod tracks have been reported from the formation,^[1] in addition to fossils of the somphospondylan sauropod Triunfosaurus leonardii.^[2]

Rio Piranhas Formation
Stratigraphic range: Berriasian-Hauterivian
Type	Geological formation
Unit of	Rio do Peixe Group
Underlies	undefined
Overlies	Sousa Formation
Lithology
Primary	Sandstone
Location
Coordinates	6.7°S 38.5°W / -6.7; -38.5
Approximate paleocoordinates	4.4°S 5.6°W / -4.4; -5.6
Region	Paraíba
Country	Brazil
Extent	Triunfo Subbasin, Rio do Peixe Basin
Rio Piranhas Formation (Brazil)

Fossil content

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Sauropods

Sauropods of the Rio Piranhas Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Titanosauria Indet.	Indeterminate				Informally known as "Sousatitan"
Triunfosaurus[3]	T. leonardii	Triunfo Basin	Berriasian to Valanginian	Three Insolate Chevrons, Three Insolate Neural Spines & Right ischium	A somphospondylian sauropod

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with ornithischian tracks
    • Ornithopod tracks