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Coordinates: 20°48′N 99°18′W / 20.8°N 99.3°W / 20.8; -99.3
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{{Short description|Geologic formation in Mexico}}
{{Unreferenced|date=June 2017}}
{{Infobox rockunit
{{Infobox rockunit
| name = El Doctor Formation
| name = El Doctor Formation
Line 5: Line 5:
| caption =
| caption =
| type = [[Formation (stratigraphy)|Formation]]
| type = [[Formation (stratigraphy)|Formation]]
| period = Cretaceous
| period = Cenomanian
| age = [[Cretaceous]]
| age = [[Albian]]-[[Cenomanian]]<br>~{{fossil range|112|95}}
| prilithology =
| prilithology = Lime [[mudstone]]
| otherlithology =
| otherlithology =
| namedfor =
| namedfor =
| namedby =
| namedby =
| region =
| region = [[Hidalgo (state)|Hidalgo]]
| country = [[Mexico]]
| country = {{MEX}}
| coordinates =
| coordinates = {{coord|20.8|N|99.3|W|display=inline,title}}
| paleocoordinates = {{coord|18.9|N|64.5|W|display=inline}}
| unitof =
| subunits =
| unitof =
| underlies =
| subunits = La Negra Member
| overlies =
| underlies =
| thickness =
| overlies =
| extent =
| thickness =
| area =
| extent =
| map =
| area =
| map = {{Location map+ | Mexico#Mexico Hidalgo
⚫
| map_caption =
| relief = 1
| width = 250
| float = center
| places =
{{Location map~ | Mexico#Mexico Hidalgo
| lat_deg = 20.8
| lon_deg = -99.8
| mark = Green pog.svg
| marksize = 10
}}
}}
⚫
| map_caption =
}}
}}


The '''El Doctor Formation''' is a [[Formation (geology)|geologic formation]] in [[Mexico]]. It preserves [[fossils]] dating back to the [[Albian]] and [[Cenomanian]] stages of the [[Cretaceous]] [[Period (geology)|period]].<ref name=FW>[https://paleobiodb.org/classic/displayCollResults?collection_no=135815 El Doctor Formation] at [[Fossilworks]].org</ref> [[Ammonite]] fossils show that age of Late Albian is more likely.<ref name=":0">{{Cite journal |last1=López-Palomino |first1=Isabel |last2=González-Rodríguez |first2=Katia Adriana |last3=Schultze |first3=Hans-Peter |last4=Palma-Ramírez |first4=Arturo |last5=Contreras-Cruz |first5=Diana |date=2021-11-01 |title=Ammonites from the La Negra Facies (El Doctor Formation, late Albian) of the Muhi Quarry, Hidalgo, central Mexico |url=https://www.sciencedirect.com/science/article/pii/S0895981121002479 |journal=Journal of South American Earth Sciences |volume=111 |pages=103400 |doi=10.1016/j.jsames.2021.103400 |bibcode=2021JSAES.11103400L |issn=0895-9811}}</ref>
The '''El Doctor Formation''' is a [[Formation (geology)|geologic formation]] in [[Mexico]]. It preserves [[fossils]] dating back to the [[Cretaceous]] [[Period (geology)|period]].

== Description ==
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.<ref name=FW/>

== Fossil content ==
The formation has provided the following fossils:<ref name=FW/><ref name=Feldmann2007>Feldmann et al., 2007</ref><ref name="Arratia2024">{{cite journal |last1=Arratia |first1=Gloria |last2=González-Rodrígue |first2=Katia |date=17 July 2024 |title=A New Intriguing Teleost from the Albian Muhi Quarry, Central Mexico, and Early Euteleostean Diversification |journal=Diversity |volume=16 |issue=7 |page=414 |doi=10.3390/d16070414 |doi-access=free}}</ref><ref>{{Cite journal |last1=Rodríguez |first1=Katia González |last2=Fielitz |first2=Christopher |date=2016 |title=CRETACEOUS OSTEICHTHYAN FISH ASSEMBLAGES FROM MEXICO |url=https://www.academia.edu/26614900 |journal=Cretaceous Period: Biotic Diversity and Biogeography. New Mexico Museum of Natural History and Science Bulletin |volume=71}}</ref><ref name=":0" />
;Fish
* ''[[Squalicorax falcatus]]''
* ''[[Ptychodus decurrens]]''
* [[Rajiformes]]<ref name="fishreview">{{cite book |last1=González-Rodríguez |first1=K.A. |url=http://pfeil-verlag.de/publikationen/mesozoic-fishes-5-global-diversity-and-evolution/ |title=Mesozoic Fishes 5 – Global Diversity and Evolution |last2=Espinosa-Arrubarrena |first2=K. |last3=González-Barba |first3=G. |publisher=Verlag Dr. Friedrich Pfeil |year=2013 |isbn=978-3-89937-159-8 |editor-last1=Arratia |editor-first1=G. |location=München |pages=9–34 |chapter=An overview of the Mexican fossil fish record |editor-last2=Schultze |editor-first2=H.-P. |editor-last3=Wilson |editor-first3=M.V.H. |chapter-url=http://www.pfeil-verlag.de/wp-content/uploads/2015/05/4_59d01.pdf}}</ref>
* ''[[Enchodus|Enchodus zimapanensis]]''<ref name="Fielitz2010">Fielitz & González Rodríguez, 2010</ref>
* ''[[Xeneichthys|Xeneichthys yanesi]]''
* ''[[Heckelichthys|Heckelichthys preopercularis]]''
* ''[[Motlayoichthys|Motlayoichthys sergioi]]''
* ''[[Nunaneichthys|Nunaneichthys mexicanus]]''
* ''[[Ichthyotringa|Ichthyotringa mexicana]]''
* ''[[Muhichthys|Muhichthys cordobai]]''
* ''[[Dalgoichthys|Dalgoichthys tropicalis]]''
* ''[[Handuichthys|Handuichthys interopercularis]]''
* ''[[Pseudomonocentris|Pseudomonocentris microspinosus]]''
* ''[[Araripichthys]]'' sp.
* ''[[Vinctifer]]'' sp.
* ''[[Pachyrhizodus]]'' sp.
* cf. ''[[Tselfatia]]''
* [[Pycnodontiformes]]
* [[Cladocyclidae]]
* [[Elopiformes]]
* [[Gonorhynchiformes]]
* [[Mawsoniidae]]<ref>{{Cite journal |last1=Schultze |first1=Hans-Peter |last2=González-Rodríguez |first2=Katia Adriana |date=2016-04-15 |title=Actinistian gular plates from the Cretaceous of Mexico and the problems assigning gular plates taxonomically |journal=Fossil Record |volume=19 |issue=2 |pages=101–117 |doi=10.5194/fr-19-101-2016 |doi-access=free |bibcode=2016FossR..19..101S |issn=2193-0074}}</ref>
;Arthropods
* ''[[Aeger|Aeger hidalguensis]]''
* ''[[Polzia|Polzia eldoctorensis]]''<ref name=Hegna2014>Hegna et al., 2014</ref>
* ''[[Victoriacaris|Victoriacaris muhiensis]]''<ref name=Hegna2014/>
* ''[[Palinurus (crustacean)|Palinurus sp.]]''

=== Ammonites ===

* ''[[Mortoniceras]]'' sp.
* [[Hamites (genus)|''Hamites'']] aff. ''renzi''
* ''[[Beudanticeras]]'' sp.

=== Echinoderms ===

* [[Echinoidea]]
* [[Crinoidea]]


== See also ==
== See also ==
{{Portal|Earth sciences|Mexico|Paleontology|Cretaceous}}
* [[List of fossiliferous stratigraphic units in Mexico]]
* [[List of fossiliferous stratigraphic units in Mexico]]
** [[Sierra Madre Formation]]


== External links ==
== References ==
{{reflist|2}}
* {{cite web |title=Fossilworks: Gateway to the Paleobiology Database |author=Various Contributors to the Paleobiology Database |url=http://www.fossilworks.org/ |accessdate=8 July 2014}}

=== Bibliography ===
* {{citation |last1=Hegna |first1=T. A. |first2=F. J. |last2=Vega |first3=K. A. |last3=González Rodríguez |year=2014 |title=First Mesozoic thylacocephalans (Arthropoda, Crustacea; Cretaceous) in the western hemisphere: new discoveries from the Muhi Quarry Lagerstätte |journal=[[Journal of Paleontology]] |volume=88 |issue=3 |pages=606–616|doi=10.1666/13-131 |bibcode=2014JPal...88..606H }}
* {{citation |last1=Fielitz |first1=C. |first2=K. A. |last2=González Rodríguez |year=2010 |title=A New Species of ''Enchodus'' (Aulopiformes: Enchodontidae) from the Cretaceous (Albian to Cenomanian) of Zimapán, Hidalgo, México |journal=[[Journal of Vertebrate Paleontology]] |volume=30 |issue=5 |pages=1343–1351|doi=10.1080/02724634.2010.501438 |bibcode=2010JVPal..30.1343F }}
* {{citation |last1=Feldmann |first1=R. M. |first2=F. J. |last2=Vega |first3=L. |last3=Martínez López |first4=K. A. |last4=González Rodrigues |first5=O. |last5=González León |first6=M. |last6=Rosario Fernández-Barajas |year=2007 |title=Crustacea from the Muhi Quarry (Albian-Cenomanian), and a review of Aptian Mecochiridae (Astacidea) From Mexico |journal=[[Annals of Carnegie Museum]] |volume=76 |issue=3 |pages=145–156|doi=10.2992/0097-4463(2007)76[145:CFTMQA]2.0.CO;2 }}


[[Category:Geologic formations of Mexico]]
[[Category:Geologic formations of Mexico]]
[[Category:Cretaceous System of North America]]
[[Category:Cretaceous Mexico]]
[[Category:Cretaceous Mexico]]
[[Category:Albian Stage]]

[[Category:Cenomanian Stage]]
{{Mexico-geologic-formation-stub}}
[[Category:Mudstone formations]]
{{Cretaceous-stub}}
[[Category:Deep marine deposits]]
[[Category:Paleontology in Mexico]]

Latest revision as of 15:26, 18 December 2024

El Doctor Formation
Stratigraphic range: Albian-Cenomanian
~112–95 Ma
TypeFormation
Sub-unitsLa Negra Member
Lithology
PrimaryLime mudstone
Location
Coordinates20°48′N 99°18′W / 20.8°N 99.3°W / 20.8; -99.3
Approximate paleocoordinates18°54′N 64°30′W / 18.9°N 64.5°W / 18.9; -64.5
RegionHidalgo
Country Mexico
El Doctor Formation is located in Mexico
El Doctor Formation
El Doctor Formation (Mexico)
El Doctor Formation is located in Hidalgo
El Doctor Formation
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]

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]

The formation has provided the following fossils:[1][3][4][5][2]

Fish
Arthropods

Ammonites

[edit]

Echinoderms

[edit]

See also

[edit]

References

[edit]
  1. ^ a b c El Doctor Formation at Fossilworks.org
  2. ^ a b López-Palomino, Isabel; González-Rodríguez, Katia Adriana; Schultze, Hans-Peter; Palma-Ramírez, Arturo; Contreras-Cruz, Diana (2021-11-01). "Ammonites from the La Negra Facies (El Doctor Formation, late Albian) of the Muhi Quarry, Hidalgo, central Mexico". Journal of South American Earth Sciences. 111: 103400. Bibcode:2021JSAES.11103400L. doi:10.1016/j.jsames.2021.103400. ISSN 0895-9811.
  3. ^ Feldmann et al., 2007
  4. ^ Arratia, Gloria; González-Rodrígue, Katia (17 July 2024). "A New Intriguing Teleost from the Albian Muhi Quarry, Central Mexico, and Early Euteleostean Diversification". Diversity. 16 (7): 414. doi:10.3390/d16070414.
  5. ^ Rodríguez, Katia González; Fielitz, Christopher (2016). "CRETACEOUS OSTEICHTHYAN FISH ASSEMBLAGES FROM MEXICO". Cretaceous Period: Biotic Diversity and Biogeography. New Mexico Museum of Natural History and Science Bulletin. 71.
  6. ^ González-Rodríguez, K.A.; Espinosa-Arrubarrena, K.; González-Barba, G. (2013). "An overview of the Mexican fossil fish record" (PDF). In Arratia, G.; Schultze, H.-P.; Wilson, M.V.H. (eds.). Mesozoic Fishes 5 – Global Diversity and Evolution. München: Verlag Dr. Friedrich Pfeil. pp. 9–34. ISBN 978-3-89937-159-8.
  7. ^ Fielitz & González Rodríguez, 2010
  8. ^ Schultze, Hans-Peter; González-Rodríguez, Katia Adriana (2016-04-15). "Actinistian gular plates from the Cretaceous of Mexico and the problems assigning gular plates taxonomically". Fossil Record. 19 (2): 101–117. Bibcode:2016FossR..19..101S. doi:10.5194/fr-19-101-2016. ISSN 2193-0074.
  9. ^ a b Hegna et al., 2014

Bibliography

[edit]
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