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Papo Seco Formation

Coordinates: 38°24′N 9°12′W / 38.4°N 9.2°W / 38.4; -9.2
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Papo Seco Formation
Stratigraphic range: Early Barremian
~125–122 Ma
TypeGeological formation
UnderliesAssises à Orbitolines Formation
OverliesPorto da Calada Formation
Lithology
PrimaryMudstone, siltstone
OtherSandstone
Location
Coordinates38°24′N 9°12′W / 38.4°N 9.2°W / 38.4; -9.2
Approximate paleocoordinates31°48′N 1°18′E / 31.8°N 1.3°E / 31.8; 1.3
RegionSetubal
Country Portugal
ExtentLusitanian Basin
Papo Seco Formation is located in Portugal
Papo Seco Formation
Papo Seco Formation (Portugal)

The Papo Seco Formation is a geological formation in Portugal, whose strata date back to the Early Cretaceous.[1] Dinosaur fossils are among the fossils that have been recovered from the formation.[2][3]

Name

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The unit was previously referred to as the "Gres a Dinosauriens", due to the abundant dinosaur remains found in the past.[4]

Description

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The Papo Seco Formation (Rey, 1992) marks the return to clastic-dominated sedimentation. Exposure of the formation is found above the low cliff between Rochadouro and Areia do Mastro, and on the foreshore and beach at Boca do Chapim. The Papo Seco Formation is dominated by silty mud-mud deposition. This is interbedded with medium to coarse, commonly ribbon shaped, clastic sandstones. Along the exposure, between Rochadouro and Boca do Chapim, the clastic sands are not laterally continuous. The exposure clearly shows that the ribbon sands are isolated and change laterally into muds. Three distinct sand facies have been identified within the Papo Seco Formation.[4]

Vertebrate paleofauna

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Dinosaurs of the Papo Seco Formation
Genus Species Presence Notes Images
Dromaeosauridae indet.[5] Indeterminate Praia do Areia do Mastro
Iberospinus I. natarioi[6] Praia de Aguncheiras Was once thought to be a specimen of Baryonyx.[1]
Suchosaurus[2] S. girardi[2] Boca do Chapim Was considered a species of Baryonyx
Titanosauriformes indet.[2] Indeterminate Boca do Chapim Was referred to "Pleurocoelus" valdensis[2]
Theropoda indet.[2] Indeterminate[2] Boca do Chapim Including Megalosaurus superbus, now known as Erectopus"[2]
Theropoda indet.[5] Indeterminate Praia do Areia do Mastro
Ornithopoda[7] Indeterminate
  • Boca do Chapim
  • Praia do Areia do Mastro
Previous supposed reports of Mantellisaurus and Iguanodon cannot be substantiated[7]
Iguanodontia[7]
cf. Styracosterna[7]

Correlation

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Early Cretaceous stratigraphy of Iberia
Ma Age Paleomap \ Basins Cantabrian Olanyà Cameros Maestrazgo Oliete Galve Morella South Iberian Pre-betic Lusitanian
100 Cenomanian
La Cabana Sopeira Utrillas Mosquerela Caranguejeira
Altamira Utrillas
Eguino
125 Albian Ullaga - Balmaseda Lluçà Traiguera
Monte Grande Escucha Escucha Jijona
Itxina - Miono
Aptian Valmaseda - Tellamendi Ol Gp. - Castrillo Benassal Benassal Olhos
Font En Gp. - Leza Morella/Oliete Oliete Villaroya Morella Capas
Rojas
Almargem
Patrocinio - Ernaga Senyús En Gp. - Jubela Forcall Villaroya Upper
Bedoulian
Figueira
Barremian Vega de Pas Cabó Abejar Xert Alacón Xert Huérguina Assises
Prada Artoles Collado Moutonianum Papo Seco
Rúbies Tera Gp. - Golmayo Alacón/Blesa Blesa Camarillas Mirambel
150 Hauterivian Ur Gp. - Pinilla Llacova Castellar Tera Gp. - Pinilla Villares Porto da
Calada
hiatus
Huerva Gaita
Valanginian Villaro Ur Gp. - Larriba Ped Gp. - Hortigüela
Ped Gp. - Hortigüela Ped Gp. - Piedrahita
Peñacoba Galve Miravetes
Berriasian Cab Gp. - Arcera Valdeprado hiatus Alfambra
TdL Gp. - Rupelo Arzobispo hiatus Tollo
On Gp. - Huérteles
Sierra Matute
Tithonian Lastres Tera Gp. - Magaña Higuereles Tera Gp. - Magaña Lourinhã
Arzobispo
Ágreda
Legend Major fossiliferous, oofossiliferous, ichnofossiliferous, coproliferous, minor formation
Sources


See also

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References

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  1. ^ a b Mateus, Octávio; Araújo, Ricardo; Natário, Carlos; Castanhinha, Rui (21 April 2011). "A new specimen of the theropod dinosaur Baryonyx from the early Cretaceous of Portugal and taxonomic validity of Suchosaurus". Zootaxa. 2827 (1): 54–68. doi:10.11646/zootaxa.2827.1.3. ISSN 1175-5334.
  2. ^ a b c d e f g h Weishampel et al., 2004, p.562
  3. ^ Papo Seco Formation at Fossilworks.org
  4. ^ a b Aillud, 2001, p.211
  5. ^ a b "Areias do Mastro's Quarry". The Paleobiology Database.
  6. ^ Mateus, Octávio; Estraviz-López, Darío (16 February 2022). "A new theropod dinosaur from the early cretaceous (Barremian) of Cabo Espichel, Portugal: Implications for spinosaurid evolution". PLOS ONE. 17 (2): e0262614. Bibcode:2022PLoSO..1762614M. doi:10.1371/journal.pone.0262614. ISSN 1932-6203. PMC 8849621. PMID 35171930.
  7. ^ a b c d Domingues Figueiredo, Silvério; Carvalho, Ismar de Souza; Pereda-Suberbiola, Xabier; Proença Cunha, Pedro; Bachtsevanidou Strantzali, Ioanna; Antunes, Vanessa (2022-11-06). "Ornithopod dinosaur remains from the Papo Seco Formation (lower Barremian, Lusitanian Basin, Portugal): a review of old and new finds". Historical Biology. 35 (11): 2181–2192. doi:10.1080/08912963.2022.2138372. ISSN 0891-2963.


Further reading

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  • S. Figueiredo, I. Bachtsevanidou Strantzali, M. Gomes, R. Pimenta, and M. Santos. 2017. Preliminary Data of New Dinosaurs and Turtles Remains from the basal Deposits of the Papo-Seco Formation in Areias do Mastro's Quarry (Cabo Espichel - Portugal). Arnava 6(1):117-130