Agua Nueva Formation

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Agua Nueva Formation
Stratigraphic range: Latest Cenomanian to Turonian
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Type Formation
Lithology
Primary Limestone
Other Shale. bentonite, chert
Location
Country Mexico
Extent San Luis Potosí

The Agua Nueva Formation is a geologic formation in Mexico. It preserves fossils dating back to the latest Cenomanian and Turonian stages of the Cretaceous period. It consists "predominantly of alternating fossiliferous, organic matter-rich, laminated, dark gray limestone and non-laminated, organic matter-poor limestone in decimeter-thick beds (10 to 30 cm) with occasional centimetric beds (5 cm) of brown shale that show no apparent internal structures." [1] The formation is noted for its qualities as a Konservat-Lagerstätte, with notable finds including the plesiosaur Mauriciosaurus , the mosasaur Yaguarasaurus and sharks Ptychodus and Aquilolamna.

Contents

It appears to have been deposited on the upper part of a shallow continental shelf. [2]

Fossil content

Color key
Taxon Reclassified taxonTaxon falsely reported as presentDubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Cartilaginous fish

Cartilaginous fish of the Agua Nueva Formation
GenusSpeciesLocationMemberMaterialNotesImages
Aquilolamna A. milarcaeComplete skeletonA bizarre aquilolamnid shark. [3] AquilolamnaMilarcae.jpg
Lamniformes indet.Articulated vertebraeAn indeterminate mackerel shark, potentially a cretoxyrhinid. [4]
Ptychodus P. decurrensVallecilloTeethA ptychodontid shark. [5] [6] Ptychodus22DB.jpg
P. mortoniTeeth
P. sp.Complete skeletons
cf. Scyliorhinus S. sp.Articulated vertebraeA catshark. [7] Scyliorhinus retifer.jpg

Ray-finned fish

Based on Amalfitano et al (2020): [8]

Ray-finned fish of the Agua Nueva Formation
GenusSpeciesLocationMemberMaterialNotesImages
Araripichthys A. sp.An araripichthyid. [2] Araripichthys castilhoi.JPG
Belonostomus B. sp.An aspidorhynchid. Belonostomus tenuirostris Ob Jura Painten D Ch2.jpg
Clupeoidei indet.HuehuetlaA relative of herrings. [9]
Enchodus E. sp.HuehuetlaAn enchodontid aulopiform. [9] Enchodus petrosus.png
Goulmimichthys G. robertiVallecillo, HuehuetlaA pachyrhizodontid crossognathiform. [2] [9] Goulmimichthys gasparini head - La Frontera Formation - Colombia.jpg
Hastichthys H. sp.HuehuetlaA dercetid aulopiform. [9]
" Nursallia ""N." tethysensisHuehuetlaA pycnodont. [9] Nursallia sp 7.JPG
Pachyrhizodus P. caninusA pachyrhizodontid crossognathiform. Pachyrhizodus.png
Paranursallia P. gutturosaA pycnodont. Nursallia cf N Gutturosum.JPG
Rhynchodercetis R. regioA dercetid aulopiform. [10] Rhynchodercetis hakelensis MHNT.jpg
Tingitanichthys T. sp.A pachyrhizodontid crossognathiform. [9]
Tselfatia T. formosaHuehuetlaA plethodid tselfatiiform. [9] Tselfatia formosa 65.JPG
Vallecillichthys V. multivertebratumVallecilloA saurodontid ichthyodectiform. [2] [11]

Lobe-finned fish

Lobe-finned fish of the Agua Nueva Formation
GenusSpeciesLocationMemberMaterialNotesImages
Latimerioidei indet.Gular plateA large-sized marine coelacanth, potentially Megalocoelacanthus . Originally interpreted as a cephalopod gladius and given the name " Palaeoctopus pelagicus". [12]

Reptiles

Mosasaurs

Mosasaurs of the Agua Nueva Formation
GenusSpeciesLocationMemberMaterialNotesImages
Yaguarasaurus Y. regiomontanusA plioplatecarpine mosasaur. [13] Yaguarasaurus columbianus tethysaur MP.png

Plesiosaurs

Plesiosaurs of the Agua Nueva Formation
GenusSpeciesLocationMemberMaterialNotesImages
Mauriciosaurus M. fernandeziA polycotylid plesiosaur. [14] Mauriciosaurus fernandezi life restoration.jpg

Molluscs

Cephalopods

Cephalopods of the Agua Nueva Formation
GenusSpeciesLocationStratigraphic positionMaterialNotesImages

See also

References

  1. ↑ Blanco, Alberto; Ángeles-Trigueros, Susana Abigail; Hernández-Ávila, Juan; Silva-Martínez, Luis E.; Zavala-Díaz de la Serna, Francisco Javier; Ambrocio-Cruz, Silvia Patricia; Castañeda-Posadas, Carlos; Blanco, Alberto; Ángeles-Trigueros, Susana Abigail; Hernández-Ávila, Juan; Silva-Martínez, Luis E. (2016). "Microscopic biomorphic structures in Upper Cretaceous marine sedimentary pyrite". Revista Mexicana de Ciencias Geológicas. 33 (3): 378–386. ISSN   1026-8774.
  2. 1 2 3 4 Blanco, Alberto; Cavin, Lionel (2003-07-01). "New Teleostei from the Agua Nueva Formation (Turonian), Vallecillo (NE Mexico)". Comptes Rendus Palevol. 2 (5): 299–306. Bibcode:2003CRPal...2..299B. doi:10.1016/S1631-0683(03)00064-2. ISSN   1631-0683.
  3. ↑ Vullo, Romain; Frey, Eberhard; Ifrim, Christina; González González, Margarito A.; Stinnesbeck, Eva S.; Stinnesbeck, Wolfgang (2021-03-19). "Manta-like planktivorous sharks in Late Cretaceous oceans". Science. 371 (6535): 1253–1256. Bibcode:2021Sci...371.1253V. doi:10.1126/science.abc1490. PMID   33737486.
  4. ↑ Blanco-Piñón, Alberto; Shimada, Kenshu; González-Barba, Gerardo; Blanco-Piñón, Alberto; Shimada, Kenshu; González-Barba, Gerardo (2005). "Lamnoid vertebrae from the Agua Nueva Formation (Upper Cretaceous: lower Turonian), northeastern Mexico". Revista mexicana de ciencias geológicas. 22 (1): 19–23. ISSN   1026-8774.
  5. ↑ Blanco-Piñón, Alberto; Garibay-Romero, Luis M.; Alvarado-Ortega, Jesús (2007). "The oldest stratigraphic record of the Late Cretaceous shark Ptychodus mortoni Agassiz, from Vallecillo, Nuevo León, northeastern Mexico". Revista mexicana de ciencias geológicas. 24 (1): 25–30. ISSN   1026-8774.
  6. ↑ Vullo, Romain; Villalobos-Segura, Eduardo; Amadori, Manuel; Kriwet, Jürgen; Frey, Eberhard; González González, Margarito A.; Padilla Gutiérrez, José M.; Ifrim, Christina; Stinnesbeck, Eva S.; Stinnesbeck, Wolfgang (2024-04-24). "Exceptionally preserved shark fossils from Mexico elucidate the long-standing enigma of the Cretaceous elasmobranch Ptychodus". Proceedings of the Royal Society B: Biological Sciences. 291 (2021): 20240262. doi:10.1098/rspb.2024.0262. PMC  11040243. PMID   38654646.
  7. ↑ "Vallecillo, Nuevo León: una nueva localidad fosilífera del Cretácico Tardío en el noreste de México | Revista Mexicana de Ciencias Geológicas". rmcg.geociencias.unam.mx. Retrieved 2025-02-05.
  8. ↑ Amalfitano, Jacopo; Giusberti, Luca; Fornaciari, Eliana; Carnevale, Giorgio (2020-04-03). "Upper Cenomanian Fishes from the Bonarelli Level (Oae2) of Northeastern Italy". Rivista Italiana di Paleontologia e Stratigrafia. 126 (2). doi:10.13130/2039-4942/13224. ISSN   2039-4942.
  9. 1 2 3 4 5 6 7 México~alvarado@geologia.unam.mx, Jesús Alvarado-Ortega~Universidad Nacional Autónoma de; México~kleytonbio@yahoo.com.br, Kleyton Magno Cantalice Severiano~Universidad Nacional Autónoma de; México~J4ir@me.com, Jair Israel Barrientos-Lara~Universidad Nacional Autónoma de; México~vertebrata.j@gmail.com, Jesús Alberto Díaz-Cruz~Universidad Nacional Autónoma de; Aguilera”~bruthmar@gmail.com, Bruno Andrés Than-Marchese~Museo de Paleontología “Eliseo Palacios (2019-03-13). "The Huehuetla quarry, a Turonian deposit of marine vertebrates in the Sierra Norte of Puebla, central Mexico". Palaeontologia Electronica. 22. doi:10.26879/921 . Retrieved 2025-02-05.{{cite journal}}: CS1 maint: numeric names: authors list (link)
  10. ↑ Blanco, Alberto; Alvarado-Ortega, Jesús (2006-09-11). "Rhynchodercetis regio, sp. nov., a dercetid fish (Teleostei: Aulopiformes) from Vallecillo, Nuevo León State, Northeastern Mexico". Journal of Vertebrate Paleontology. 26 (3): 552–558. doi:10.1671/0272-4634(2006)26[552:RRSNAD]2.0.CO;2. ISSN   0272-4634.
  11. ↑ Blanco-Piñón, Alberto; Alvarado-Ortega, Jesús (2007). "Review of Vallecillichthys multivertebratum (Teleostei: Ichthyodectiformes), a Late Cretaceous (early Turonian) "Bulldog fish" from northeastern Mexico". Revista mexicana de ciencias geológicas. 24 (3): 450–466. ISSN   1026-8774.
  12. ↑ Schultze, Hans-Peter; Fuchs, Dirk; Giersch, Samuel; Ifrim, Christina; Stinnesbeck, Wolfgang (2010). "Palaeoctopus pelagicus from the Turonian of Mexico reinterpreted as a coelacanth (Sarcopterygian) gular plate". Palaeontology. 53 (3): 689–694. Bibcode:2010Palgy..53..689S. doi:10.1111/j.1475-4983.2010.00943.x. ISSN   1475-4983.
  13. ↑ Rivera-Sylva, Héctor E.; Longrich, Nicholas R.; Padilla-Gutierrez, José M.; Guzmán-Gutiérrez, José Rubén; Escalante-Hernández, Víctor M.; González-Ávila, José G. (2024-01-01). "A new species of Yaguarasaurus (Mosasauridae: Plioplatecarpinae) from the Agua Nueva Formation (Upper Turonian – ?Lower Coniacian) of Nuevo Leon, Mexico". Journal of South American Earth Sciences. 133: 104694. Bibcode:2024JSAES.13304694R. doi:10.1016/j.jsames.2023.104694. ISSN   0895-9811.
  14. ↑ Frey, Eberhard; Mulder, Eric W. A.; Stinnesbeck, Wolfgang; Rivera-Sylva, Héctor E.; Padilla-Gutiérrez, José Manuel; González-González, Arturo Homero; Frey, Eberhard; Mulder, Eric W. A.; Stinnesbeck, Wolfgang; Rivera-Sylva, Héctor E.; Padilla-Gutiérrez, José Manuel; González-González, Arturo Homero (2017). "A new polycotylid plesiosaur with extensive soft tissue preservation from the early Late Cretaceous of northeast Mexico". Boletín de la Sociedad Geológica Mexicana. 69 (1): 87–134. Bibcode:2017BoSGM..69...87F. doi:10.18268/BSGM2017v69n1a5. ISSN   1405-3322.


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