Moradi Formation
| Moradi Formation | |
|---|---|
| Stratigraphic range: Lopingian ~ | |
| Type | Geological formation |
| Unit of | Izégouandane Group |
| Sub-units | Lower, Middle and Upper Units |
| Underlies | Teloua 1 Formation |
| Overlies | Tamamaït Formation |
| Thickness | 100 metres (330 ft) |
| Lithology | |
| Primary | Mudstone, siltstone |
| Other | Sandstone, conglomerate |
| 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 | Agadez Region |
| Country | Niger |
| Extent | Iullemmeden Basin |
  Moradi Formation (Niger) | |
The Moradi Formation is a geological formation in Niger. It is of Late Permian age. It is informally divided into three subunits. The lower portion of the formation consists of red mudstone, with muddy calcareous sandstone and quartz-granlule conglomerate present as lenses. The middle portion consists of muddy siltstone in thick beds interbedded with red argillaceous sandstone. The lower two thirds of the upper portion of the formation consist of red siltstone intercalated with channel lag intraformational conglomerates, while the upper third consists of barchanoid shaped lenses of conglomeratic sandstone with ventifacts.[1] These facies are indicatived of deposition under arid conditions, with less than 300 millimetres (12 in) of annual rainfall in the Central Pangean desert, with annual temperatures of 30 to 35 °C (86 to 95 °F), but with ephemeral water presence including lakes.[2]
Fossil content
[edit | edit source]Dicynodonts, widespread in other contemporary deposits, appear to be absent, with previous reports being in error.[3] The flora of the formation includes indeterminate voltzian conifers.[4]
Synapsida
[edit | edit source]| Genus | Species | Notes |
|---|---|---|
| Rubidgeinae indet. | Indeterminate | An indeterminate rubidgine gorgonopsian[3] |
Reptiliomorpha
[edit | edit source]| Genus | Species | Notes |
|---|---|---|
| Bunostegos | B. akokanensis | A pareiasaurian reptile[5] |
| Moradisaurus | M. grandis | A large captorhinid[6] |
Temnospondyli
[edit | edit source]| Genus | Species | Notes |
|---|---|---|
| Nigerpeton | N. ricqlesi | A cochleosaurid temnospondyl[7] |
| Saharastega | S. moradiensis | A basal temnospondyl[8][9] |
References
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- ^ Taquet, P. (1969). Première découverte en Afrique d'un Reptile Captorhinomorphe (Cotylosaurien). Comptes Rendus l'Académie des Sciences, Série D 268:779-781
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