• Source: Barreirinha Formation

The Barreirinha Formation is a late Frasnian geologic formation of the Amazon Basin in the state of Amazonas of northern Brazil. The group comprises deep marine black shales and sandstones.




Fossil content


The formation has provided conodont fossils of:




References






= Bibliography

=
Cardoso, C. N.; Sanz López, J.; Blanco Ferrera, S.; Lemos, V. B.; Scomazzon, A. K. (2015), "Frasnian conodonts at high palaeolatitude (Amazonas Basin, north Brazil)", Palaeogeography, Palaeoclimatology, Palaeoecology, 418: 57–64, Bibcode:2015PPP...418...57C, doi:10.1016/j.palaeo.2014.11.007

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