Earth:Marnes d'Auzas Formation
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| Marnes d’Auzas Formation Stratigraphic range: Late Cretaceous (Late Maastrichtian) ~67.5–66 Ma | |
|---|---|
| Type | Geological formation |
| Underlies | Aurignac Formation |
| Overlies | Jadet Calcarenites Formation |
| Thickness | About 100 m |
| Lithology | |
| Primary | Marls |
| Other | Sandstones |
| Location | |
| Coordinates | 43°25′N 1°30′E |
| Region | Europe |
| Country |  France |
  Marnes d'Auzas Formation (France) | |
The Marnes d’Auzas Formation (Auzas Marls Formation) is a geological Formation in southwestern France (departments of Ariège and Haute-Garonne) whose strata date back to the Late Maastrichtian.[1] It is about 100 metres thick and consists primarily of marls with some interbeds of sandstones.[1] It corresponds to sediments whose depositional environment evolved from the paralic domain (coastal lagoons, tidal marsh, tidal muddy channel) at the base of the formation, towards a more continental domain (alluvial plain, fluvial channels) in its upper part.[1] The Marnes d’Auzas Formation was deposited in the west coast of the former Ibero-Armorican Island, which included much of France and Spain .[2]
Vertebrate paleofauna
- Theropods:
- Theropoda indet. (a medium-sized form only known by a tooth)[1]
- Dromaeosauridae indet.[4][1]
- Hadrosaurs:
- Sauropods:
- Titanosauria indet.[4][1] (compared to the Ibero-Armorican titanosaurs from the Campanian and early Maastrichtian times, the teeth of this form are more like those of Atsinganosaurus than those of Ampelosaurus or Lirainosaurus.[5]
- Bird:
- Mammals:
- Pterosaurs:
- Azhdarchidae indet. (only known by a very large cervical vertebra suggesting an individual with a wing-span of 9 m) [6][1]
- Turtle:
- Squamata:
- Mosasauroidea indet.[4][1] (only known by a vertebra first attributed to a Varanoidea, would actually be a freshwater mosasaur)[8]
- ? Amphisbaenia indet.[4][1]
- cf. Teiidae indet.[1]
- Crocodylia:
- Thoracosaurus neocesariensis[9][4][1] (according to Christopher Brochu, the species from the Marnes d'Auzas represents a distinct taxon from T. neocesariensis)[10]
- cf. Musturzabalsuchus sp.[4][1]
- Amphibia:
- Fish:
- Palaeogaleus sp.[1]
- Rhinobatos sp.[1]
- Rhombodus binkhorsti[1]
- Coupatezia sp.[1]
- cf. Pycnodus sp.[1]
- Lepisosteidae indet.[4][1]
- Phyllodontidae indet.[4][1]
- Sparidae indet.[4][1]
Bones of an indeterminate Lambeosaurinae from the site of Cassagnau 2 in the middle part of the Marnes d'Auzas Formation. Predentary in dorsal (A) and ventral (B) views. Partial left dentary in medial view (C). Dentary tooth crowns in lingual view (D). Complete left pubis in lateral view (E). Left dentary in medial view (F), belonging to the same individual as the predentary.[3]
See also
- List of dinosaur-bearing rock formations
References
- ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 Laurent, Y. (2003). "Les faunes de vertébrés continentaux du Maastrichtien supérieur d'Europe : systématique et biodiversité". Strata (41): 1–81.
- ↑ Csiki-Sava, Z.; Buffetaut, E.; Ősi, A.; Pereda-Suberbiola, X.; Brusatte, S.L. (2015). "Island life in the Cretaceous-faunal composition, biostratigraphy, evolution, and extinction of land-living vertebrates on the Late Cretaceous European archipelago". ZooKeys (469): 1–161. doi:10.3897/zookeys.469.8439. PMID 25610343. PMC 4296572. https://zookeys.pensoft.net/article/4474/download/pdf/.
- ↑ 3.0 3.1 3.2 3.3 Prieto-Márquez, A.; Dalla Vecchia, F.M.; Gaete, R.; Galobart, À. (2013). "Diversity, Relationships, and Biogeography of the Lambeosaurine Dinosaurs from the European Archipelago, with Description of the New Aralosaurin Canardia garonnensis". PLOS ONE 8 (7): e69835. doi:10.1371/journal.pone.0069835. PMID 23922815. Bibcode: 2013PLoSO...869835P.
- ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 Laurent, Y.; Bilotte, M.; Le Loeuff, J. (2002). "Late Maastrichtian continental vertebrates from southwestern France: correlation with marine fauna". Palaeogeography, Palaeoclimatology, Palaeoecology 187 (1–2): 121–135. doi:10.1016/S0031-0182(02)00512-6. Bibcode: 2002PPP...187..121L. http://doc.rero.ch/record/14516/files/PAL_E1717.pdf.
- ↑ Garcia, G.; Amicot, S.; Fournier, F.; Thouand, E.; Valentin, X. (2010). "A new Titanosaur genus (Dinosauria, Sauropoda) from the Late Cretaceous of southern France and its paleobiogeographic implications". Bulletin de la Société Géologique de France 181 (3): 269–277. doi:10.2113/gssgfbull.181.3.269.
- ↑ Buffetaut, E.; Laurent, Y.; Le Loeuff, J.; Bilotte, M. (1997). "A terminal Cretaceous giant pterosaur from the French Pyrenees". Geological Magazine 134 (4): 553–556. doi:10.1017/S0016756897007449. Bibcode: 1997GeoM..134..553B.
- ↑ Pérez-García, A.; Ortega, F.; Murelaga, X. (2012). "A new genus of Bothremydidae (Chelonii, Pleurodira) in the Cretaceous of southwestern Europe". Geobios 45 (2): 219–229. doi:10.1016/j.geobios.2011.03.001.
- ↑ Garcia, G.; Bardet, N.; Houssaye, A.; Pereda-Suberbiola, X.; Valentin, X. (2015). "Mosasauroid (Squamata) discovery in the Late Cretaceous (Early Campanian) continental deposits of Villeveyrac-L'Olivet, Southern France – Découverte de Mosasauroidea (Squamata) dans le Crétacé supérieur (Campanien inférieur) continental de Villeveyrac – L'Olivet, sud de la France". Comptes Rendus Palevol 14 (6–7): 495–505. doi:10.1016/j.crpv.2015.05.002.
- ↑ Laurent, Y.; Buffetaut, E.; Le Loeuff, J. (2000). "Un crâne de Thoracosaurine (Crocodylia, Crocodylidae) dans le Maastrichtien supérieur du sud de la France". Oryctos (3): 19–27.
- ↑ Brochu, C.A. (2004). "A new Late Cretaceous gavialoid crocodylian from eastern North America and the phylogenetic relationships of Thoracosaurs". Journal of Vertebrate Paleontology 24 (3): 610–633. doi:10.1671/0272-4634(2004)024[0610:ANLCGC2.0.CO;2]. http://doc.rero.ch/record/15194/files/PAL_E2470.pdf.
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