~2025-39329-39 at 22:30, 11 December 2025

2025-12-11T22:30:44Z

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{{Short description|Geological formation in Occitania, France}}
{{Infobox rockunit
| name = Marnes Rouges Inférieures Formation
| image =
| caption =
| type = [[Geological formation]]
| age = [[Maastrichtian]]<br>~{{fossil range|70|66}}
| period = Maastrichtian
| prilithology = [[Mudstone]]
| otherlithology = [[Sandstone]]
| namedfor = French: "Lower Red Marls"
| namedby =
| region = [[Occitania (administrative region)|Occitania]]
| country = [[France]]
| coordinates = {{coord|42.9|N|2.3|E|display=inline,title}}
| paleocoordinates = {{coord|34.8|N|2.0|E|display=inline}}
| unitof =
| subunits =
| underlies = [[Calcaires de Vignevieille]]
| overlies = [[Grès d'Alet]]
| thickness = Over {{convert|150|m|ft|abbr=on}}
| extent =
| area =
| map = {{Location map+ | France
| relief = 1
| width = 250
| float = center
| places =
{{Location map~ | France
| lat_deg = 42.9
| lon_deg = 2.3
| mark = Lightgreen pog.svg
| marksize = 10
}}
}}
| map_caption =
}}

The '''Marnes Rouges Inférieures Formation''' is a [[Late Cretaceous]] geologic [[Formation (geology)|formation]] found in the French Pyrenees. It predominantly consists of red mustone, with minor brown mudstone and sandstone.<ref name=Fondevilla2016>Fondevilla et al., 2016</ref> Dinosaurs, [[dinosaur]] eggs and avialian stem-birds have been reported from the formation.<ref name="dinosaurdistribution">Weishampel et al., 2004, pp.517-607</ref>

== Fossil content ==

{{paleobiota-key-compact}}

=== Dinosaurs ===

==== Ornithischians ====
{| class="wikitable" align="center"
|-
! colspan="7" align="center" | [[Ornithischia|Ornithischians]] of Marnes Rouges Inférieures Formation
|-
! Genus
! Species
! Location
! Stratigraphic position
! Material
! Notes
! Images
|-
| ''[[Rhabdodon]]''
| ''R. priscus''
|
|
|
| A [[Rhabdodontidae|rhabdodontid]] [[Ornithopoda|ornithopod]]
|
|-
|}

==== Sauropods ====
{| class="wikitable" align="center"
|-
! colspan="7" align="center" | [[Sauropoda|Sauropods]] of the Marnes Rouges Inférieures Formation
|-
! Genus
! Species
! Location
! Stratigraphic position
! Material
! Notes
! Images
|-
| ''[[Ampelosaurus]]''
| ''A. atacis''
|
|
|
| A [[Lirainosaurinae|lirainosaurine]] [[Lithostrotia|lithostrotian]]
|
|-
| ''[[Lirainosaurus]]''
| ''L. astibiae''
|
|
|
| A lirainosaurine lithostrotian
|
|-
|}

==== Theropods ====
{| class="wikitable" align="center"
|-
! colspan="7" align="center" | [[Theropoda|Theropods]] of the Marnes Rouges Inférieures Formation
|-
! Genus
! Species
! Location
! Stratigraphic position
! Material
! Notes
! Images
|-
| ''[[Gargantuavis]]''
| ''G. philoinos''
|
|
|
| A [[Gargantuavis|gargantuaviid]] [[Avialae|avialan]]
|
|-
|}

=== Crocodilians ===
{| class="wikitable" align="center"
|-
! colspan="7" align="center" | [[Crocodilia|Crocodilia]] of the Marnes Rouges Inférieures Formation
|-
! Genus
! Species
! Location
! Stratigraphic position
! Material
! Notes
! Images
|-
| ''[[Allodaposuchus]]''
| ''A. precedens''
|
|
|
| A [[Allodaposuchidae|allodaposuchid]] [[Eusuchia|eusuchian]]
|
|-
|}

=== Turtles ===
{| class="wikitable" align="center"
|-
! colspan="7" align="center" | [[Turtle|Turtles]] of the Marnes Rouges Inférieures Formation
|-
! Genus
! Species
! Location
! Stratigraphic position
! Material
! Notes
! Images
|-
| ''[[Foxemys]]''
| ''F. mechinorum''
|
|
|
| A [[Bothremydidae|bothremydid]] [[Pleurodira|side-necked turtles]]
|
|-
|}

== See also ==
* [[List of dinosaur-bearing rock formations]]
** [[List of stratigraphic units with dinosaur trace fossils]]
*** [[List of stratigraphic units with dinosaur trace fossils#Eggs or nests|Dinosaur eggs]]

== References ==
{{Reflist|2}}

=== Bibliography ===

* {{citation |last1=Fondevilla |first1=Víctor |last2=Dinarès-Turell |first2=Jaume |last3=Vila |first3=Bernat |last4=Le Loeuff |first4=Jean |last5=Estrada |first5=Rita |last6=Oms |first6=Oriol |last7=Galobart |first7=Àngel |year=2016 |title=Magnetostratigraphy of the Maastrichtian continental record in the Upper Aude Valley (northern Pyrenees, France): Placing age constraints on the succession of dinosaur-bearing sites |url=https://linkinghub.elsevier.com/retrieve/pii/S0195667115300525 |journal=[[Cretaceous Research]] |volume=57 |pages=457–472 |doi=10.1016/j.cretres.2015.08.009|url-access=subscription }}
* {{citation |last1=Weishampel |first1=David B. |author2-link=Peter Dodson |last2=Dodson |first2=Peter |author3-link=Halszka Osmólska |last3=Osmólska |first3=Halszka |year=2004 |title=The Dinosauria, 2nd edition |url=https://books.google.com/books?id=vtZFDb_iw40C |publisher=Berkeley: University of California Press |pages=1–880 |accessdate=2019-02-21 |isbn=0-520-24209-2 |author1-link=David B. Weishampel }}

[[Category:Geologic formations of France]]
[[Category:Upper Cretaceous Series of Europe]]
[[Category:Cretaceous France]]
[[Category:Maastrichtian Stage]]
[[Category:Marl formations]]
[[Category:Conglomerate formations]]
[[Category:Sandstone formations]]
[[Category:Fluvial deposits]]
[[Category:Ooliferous formations]]
[[Category:Paleontology in France]]

Marnes Rouges Inférieures Formation - Revision history

~2025-39329-39 at 22:30, 11 December 2025