El Doctor Formation
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| El Doctor Formation | |
|---|---|
| Stratigraphic range: Albian-Cenomanian ~ | |
| Type | Formation |
| Sub-units | La Negra Member |
| Lithology | |
| Primary | Lime mudstone |
| 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 | Hidalgo |
| Country | Mexico |
El Doctor Formation (Mexico) El Doctor Formation (Hidalgo) | |
The El Doctor Formation is a geologic formation in Mexico. It preserves fossils dating back to the Albian and Cenomanian stages of the Cretaceous period.[1] Ammonite fossils show that age of Late Albian is more likely.[2]
Description
[edit | edit source]The light grey micritic limestone sequence with intercalated black chert lenses was deposited in an open marine basin with a hypersaline and/or poorly oxygenated bottom.[1]
Fossil content
[edit | edit source]The formation has provided the following fossils:[1][3][4][5][2]
- Fish
- Squalicorax falcatus
- Ptychodus decurrens
- Rajiformes[6]
- Enchodus zimapanensis[7]
- Xeneichthys yanesi
- Heckelichthys preopercularis
- Motlayoichthys sergioi
- Nunaneichthys mexicanus
- Ichthyotringa mexicana
- Muhichthys cordobai
- Dalgoichthys tropicalis
- Handuichthys interopercularis
- Pseudomonocentris microspinosus
- Araripichthys sp.
- Vinctifer sp.
- Pachyrhizodus sp.
- cf. Tselfatia
- Pycnodontiformes
- Cladocyclidae
- Elopiformes
- Gonorhynchiformes
- Mawsoniidae[8]
- Arthropods
Ammonites
[edit | edit source]- Mortoniceras sp.
- Hamites aff. renzi
- Beudanticeras sp.
Echinoderms
[edit | edit source]See also
[edit | edit source]References
[edit | edit source]- ^ a b c El Doctor Formation at Fossilworks.org
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Feldmann et al., 2007
- ^ 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).
- ^ Fielitz & González Rodríguez, 2010
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Hegna et al., 2014
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).
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