Rio Piranhas Formation

Rio Piranhas Formation
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°42′S 38°30′W / 6.7°S 38.5°W
Approximate paleocoordinates	4°24′S 5°36′W / 4.4°S 5.6°W
Region	Paraíba
Country	Brazil
Extent	Triunfo Subbasin, Rio do Peixe Basin
	Rio Piranhas Formation (Brazil)
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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]

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.

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

^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
^ Areias Farm at Fossilworks.org
^ Ismar de Souza Carvalho; Leonardo Salgado; Rafael Matos Lindoso; Hermínio Ismael de Araújo-Júnior; Francisco Cézar Costa Nogueira; José Agnelo Soares (2017). "A new basal titanosaur (Dinosauria, Sauropoda) from the Lower Cretaceous of Brazil" (PDF). Journal of South American Earth Sciences. 75: 74–84. Bibcode:2017JSAES..75...74C. doi:10.1016/j.jsames.2017.01.010. hdl:11336/77769. Archived from the original (PDF) on 2018-06-15. Retrieved 2018-06-14.

Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21{{citation}}: CS1 maint: publisher location (link)