Río Belgrano Formation Explained

Río Belgrano Formation
Type:	Geological formation
Period:	Aptian
Age:	Barremian-Aptian
Prilithology:	Sandstone
Region:	Santa Cruz Province
Country:	Argentina
Coordinates:	-48°N -72°W
Paleocoordinates:	-48°N -35.5°W
Unitof:	Pueyrredón Group
Underlies:	Río Tarde Formation
Overlies:	Río Mayer Formation
Extent:	Austral Basin

The Río Belgrano Formation is a Barremian to Aptian geologic formation of the Austral Basin in Patagonia, southern Argentina. Among others, pterosaur and ichthyosaur fossils have been recovered from the formation.^[1]

Fossil content

The following fossils have been recovered from the formation:^[2]

• Hatchericeras patagonense
• Palaeastacus terraereginae
• Platypterygius hauthali^[3]
• Sanmartinoceras africanum
• Tonohamites aequicingulatus
• ?Anhangueridae indet.

See also

• List of pterosaur-bearing stratigraphic units

References

Bibliography

Further reading

• M. B. Aguirre Urreta. 1989. The Cretaceous decapod Crustacea of Argentina and the Antarctic Peninsula. Palaeontology 32(3):499-552
• M. B. Aguirre Urreta. 1986. Aptian ammonites from the Argentinian Austral Basin. The Subfamily Helicancylinae Hyatt, 1894. Annals of the South African Museum 96(7):271-314
• J. F. Bonaparte. 1978. El Mesozoico de America de Sur y sus Tetrapodos [The Mesozoic of South America and its tetrapods]. Opera Lilloana 26:1-596

Notes and References

1. http://www.fossilworks.org/cgi-bin/bridge.pl?action=displayStrata&geological_group=&formation=R%EDo%20Belgrano&group_formation_member=R%EDo%20Belgrano Río Belgrano Formation
2. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=92232 Río Roble
3. Páramo, 2018, p.6