Pastos Bons Formation
Jump to navigation
Jump to search
| Pastos Bons Formation | |
|---|---|
| Stratigraphic range: Oxfordian-Kimmeridgian ~ | |
| File:Geologic map of the Parnaíba Basin.jpg Geologic map of the Parnaíba Basin with the Jurassic in red | |
| Type | Geological formation |
| Underlies | Mosquitos Formation |
| Overlies | Sardinha Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Shale |
| Location | |
| Coordinates | Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). |
| Approximate paleocoordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | Maranhão |
| Country | Brazil |
| Extent | Parnaíba Basin |
| Type section | |
| Named for | Pastos Bons |
Pastos Bons Formation (Brazil) | |
The Pastos Bons Formation is a Late Jurassic (Oxfordian to Kimmeridgian) geologic formation of the Parnaíba Basin in Maranhão, northeastern Brazil. The formation forms part of the sag phase of the basin. It overlies the Sardinha Formation and is overlain by the Mosquito Formation.[1] The fluvial to lacustrine sandstones and shales have provided fossils of a coelacanth fish, Parnaibaia maranhaoensis and a paralligatorid named after the formation, Batrachomimus pastosbonensis.
Fossil content
[edit | edit source]The following fossils were reported from the formation:[2]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Crocodylomorphs
[edit | edit source]| Crocodylomorphs of the Pasto Bons Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Batrachomimus[3] | B. pastosbonensis | A paralligatorid neosuchian. | ||||
Fish
[edit | edit source]| Fishes of the Pasto Bons Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Lophionotus[4] | L. parnaibensis | A semionotid fish. | ||||
| Parnaibaia[5] | P. maranhaoensis | A mawsoniid coelacanth. | ||||
| Quasimodichthys[6] | Q. piauhyensis | A semionotiform fish. | ||||
Plants
[edit | edit source]| Plants of the Pasto Bons Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Araucariaceae Indet. | Indeterminate | |||||
See also
[edit | edit source]- Takutu Formation, contemporaneous formation of northern Brazil and Guyana
References
[edit | edit source]- ^ De Castro et al., 2016, p.532
- ^ Pastos Bons Formation at Fossilworks.org
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Yabumoto, 2007
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Bibliography
[edit | edit source]- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).