Rio Colorado Formation

Rio Colorado Formation
Type	Geological formation
Location
Country	Argentina

The Rio Colorado Formation is a Mesozoic geologic formation. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.^[1]

Paleofauna

Ornithischians

Ornithischians reported from the Rio Colorado Formation
Genus	Species	Province	Stratigraphic position	Material	Notes	Images
Gasparinisaura[2]	G. cincosaltensis[2]	Río Negro Province[2]	Anacleto	"Skull and postcranial skeleton, postcranial elements, juvenile to subadult."[3]		Gasparinisaura

Sauropods

Titanosaur eggs are known from Neuquen province.^[4]

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 reported from the Rio Colorado Formation
Genus	Species	Province	Stratigraphic position	Material	Notes	Images
Antarctosaurus[2]	A. wichmannianus[2]	Río Negro Province[2]	Anacleto			Antarctosaurus
Loricosaurus[5]	L. scutatus[5]	Neuquén Province[4] Río Negro Province[2]
Microcoelus[4]	M. patagonicus[4]	Neuquén Province[4]	Bajo de La Carpa		Possible synonym of Neuquensaurus
Neuquensaurus[6]	N. australis[6]	Neuquén Province[4] Río Negro Province[2]	Anacleto
"Titanosaurus"[2]	"T." robustus[2]	Río Negro Province[2]	Anacleto
Titanosaurus[6]	T. nanus[6]	Neuquén Province[4]	Bajo de La Carpa

Theropods

Theropods reported from the Rio Colorado Formation
Genus	Species	Province	Stratigraphic position	Material	Notes	Images
Abelisaurus[2]	A. comahuaensis[2]	Río Negro Province[2]	Anacleto	"Partial skull."[7]		Aucasaurus
Alvarezsaurus[4]	A. calvoi[4]	Neuquén Province[4]	Bajo de La Carpa	"Partial postcranial skeleton."[8]
Aucasaurus[4]	A. garridoi[4]	Neuquén Province[4]	Anacleto	"Nearly complete skeleton."[7]
Neuquenornis[4]	N. volans[4]	Neuquén Province[4]	Bajo de la Carpa	"Partial skeleton."[9]
Patagopteryx[4]	P. deferrariisi[4]	Neuquén Province[4]	Bajo de la Carpa	"Many skeletons."[10]
Velocisaurus[4]	V. unicus[4]	Neuquén Province[4]	Bajo de la Carpa	"Partial hind limb."[7]

See also

• List of stratigraphic units with dinosaur body fossils
• List of stratigraphic units with dinosaur trace fossils

Footnotes

1. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 603-604.
2. "63.10 Provincia de Río Negro, Argentina; 4. Río Colorado Formation," in Weishampel, et al. (2004). Page 604.
3. "Table 18.1," in Weishampel, et al. (2004). Page 395.
4. "63.6 Provincia de Neuquén, Argentina; 3. Río Colorado Formation," in Weishampel, et al. (2004). Page 603.
5. Listed as "?Loricosaurus scutatus" in "63.6 Provincia de Neuquén, Argentina; 3. Río Colorado Formation" and "63.10 Provincia de Río Negro, Argentina; 4. Río Colorado Formation," in Weishampel, et al. (2004). Pages 603-604.
6. "63.6 Provincia de Neuquén, Argentina; 3. Río Colorado Formation" and "63.10 Provincia de Río Negro, Argentina; 4. Río Colorado Formation," in Weishampel, et al. (2004). Pages 603-604.
7. "Table 3.1," in Weishampel, et al. (2004). Page 49.
8. "Table 11.1," in Weishampel, et al. (2004). Page 211.
9. "Table 11.1," in Weishampel, et al. (2004). Page 213.
10. "Table 11.1," in Weishampel, et al. (2004). Page 212.

References

• Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.