Papo Seco Formation

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]

Papo Seco Formation
Stratigraphic range: Early Barremian
~
TypeGeological formation
UnderliesAssises à Orbitolines Formation
OverliesPorto da Calada Formation
Lithology
PrimaryMudstone, siltstone
OtherSandstone
Location
Coordinates38.4°N 9.2°W / 38.4; -9.2
Approximate paleocoordinates31.8°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)

Name

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

Description

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

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

Early Cretaceous stratigraphy of Iberia
MaAgePaleomap \ BasinsCantabrianOlanyàCamerosMaestrazgoOlieteGalveMorellaSouth IberianPre-beticLusitanian
100Cenomanian
La CabanaSopeiraUtrillasMosquerelaCaranguejeira
AltamiraUtrillas
Eguino
125AlbianUllaga - BalmasedaLluçàTraiguera
Monte GrandeEscuchaEscuchaJijona
Itxina - Miono
AptianValmaseda - TellamendiOl Gp. - CastrilloBenassalBenassalOlhos
FontEn Gp. - LezaMorella/OlieteOlieteVillaroyaMorellaCapas
Rojas
Almargem
Patrocinio - ErnagaSenyúsEn Gp. - JubelaForcallVillaroyaUpper
Bedoulian
Figueira
BarremianVega de PasCabóAbejarXertAlacónXertHuérguinaAssises
PradaArtolesColladoMoutonianum Papo Seco
RúbiesTera Gp. - GolmayoAlacón/BlesaBlesaCamarillasMirambel
150HauterivianUr Gp. - PinillaLlacovaCastellarTera Gp. - PinillaVillaresPorto da
Calada
hiatus
HuervaGaita
ValanginianVillaroUr Gp. - LarribaPed Gp. - Hortigüela
Ped Gp. - HortigüelaPed Gp. - Piedrahita
PeñacobaGalveMiravetes
BerriasianCab Gp. - ArceraValdepradohiatusAlfambra
TdL Gp. - RupeloArzobispohiatusTollo
On Gp. - Huérteles
Sierra Matute
TithonianLastresTera Gp. - MagañaHiguerelesTera Gp. - MagañaLourinhã
Arzobispo
Ágreda
Legend Major fossiliferous, oofossiliferous, ichnofossiliferous, coproliferous, minor formation
Sources

See also

References

  1. 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. Weishampel et al., 2004, p.562
  3. Papo Seco Formation at Fossilworks.org
  4. Aillud, 2001, p.211
  5. "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. 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: 1–12. doi:10.1080/08912963.2022.2138372. ISSN 0891-2963.


Further reading

  • 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
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