From Surf Wiki (app.surf) — the open knowledge base

Papo Seco Formation

Geologic formation in Portugal

Summary

Geologic formation in Portugal

Field	Value
name	Papo Seco Formation
image	File:Praia do Areia do Mastro site (Portugal).jpg
caption	The Papo Seco Formation outcrops towards the bottom of the Praia do Areia do Mastro site
type	Geological formation
age	Early Barremian
~
period	Barremian
prilithology	Mudstone, siltstone
otherlithology	Sandstone
region	Setubal
country	Portugal
coordinates
paleocoordinates
underlies	Assises à Orbitolines Formation
overlies	Porto da Calada Formation
extent	Lusitanian Basin
map	{{Location map+	Portugal
relief	1
width	250
float	center
lat_deg	38.4
lon_deg	-9.2
mark	Green pog.svg
marksize	12

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

Name

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

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.

Vertebrate paleofauna

Dinosaurs

Ornithischians

Ornithischians of the Papo Seco Formation	Genus	Species	Presence	Materials	Notes	Images
Cariocecus	C. bocagei	Praia do Areia do Mastro	A partial skull	A hadrosauroid ornithopod, which represents the first iguanodontian skull found in Portugal	[[File:Cariocecus bocagei.png	center	thumb	[[Cariocecus bocagei]]]]
last1=Domingues Figueiredo	first1=Silvério	last2=Carvalho	first2=Ismar de Souza	last3=Pereda-Suberbiola	first3=Xabier	last4=Proença Cunha	first4=Pedro	last5=Bachtsevanidou Strantzali	first5=Ioanna	last6=Antunes	first6=Vanessa	date=2022-11-06	title=Ornithopod dinosaur remains from the Papo Seco Formation (lower Barremian, Lusitanian Basin, Portugal): a review of old and new finds	journal=Historical Biology	volume=35	issue=11	language=en	pages=2181–2192	doi=10.1080/08912963.2022.2138372	issn=0891-2963	doi-access=free }}	Indeterminate	Previous supposed reports of Mantellisaurus and Iguanodon cannot be substantiated
Iguanodontia
cf. Styracosterna

Saurischians

Saurischians of the Papo Seco Formation	Genus	Species	Presence	Materials
title=Areias do Mastro's Quarry	url=https://paleobiodb.org/classic/basicCollectionSearch?collection_no=189306&is_real_user=	website=The Paleobiology Database}}	Indeterminate	Praia do Areia do Mastro	[[File:Iberospinus natarioi by PaleoGeek.png	center	thumb	[[Iberospinus natarioi]]]]
Iberospinus	I. natarioi	Praia de Aguncheiras	Several assorted bones consist of dentary fragments, teeth, an incomplete right scapula, partial dorsal and caudal vertebrae, rib fragments, a partial pubis, two incomplete calcanea, and a pedal ungual phalanx.	Was once thought to be a specimen of Baryonyx.
Suchosaurus	S. girardi	Boca do Chapim	Two fragment specimens consists of a mandible and one tooth	Was considered a species of Baryonyx
Titanosauriformes indet.	Indeterminate	Boca do Chapim		Was referred to "Pleurocoelus" valdensis
Theropoda indet.	Indeterminate	Boca do Chapim		Including Megalosaurus superbus, now known as Erectopus"
Theropoda indet.	Indeterminate	Praia do Areia do Mastro

Correlation

References

(21 April 2011). "A new specimen of the theropod dinosaur ''Baryonyx'' from the early Cretaceous of Portugal and taxonomic validity of ''Suchosaurus''". Zootaxa.
Weishampel et al., 2004, p.562
[https://paleobiodb.org/classic/displayStrata?geological_group=&formation=Papo%20Seco&group_formation_member=Papo%20Seco Papo Seco Formation] at [[Fossilworks]].org
Aillud, 2001, p.211
(December 31, 2025). "''Cariocecus bocagei'', a new basal hadrosauroid from the Lower Cretaceous of Portugal". Journal of Systematic Palaeontology.
(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.
"Areias do Mastro's Quarry".
(16 February 2022). "A new theropod dinosaur from the early cretaceous (Barremian) of Cabo Espichel, Portugal: Implications for spinosaurid evolution". PLOS ONE.

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

geologic-formations-of-portugal lower-cretaceous-series-of-europe cretaceous-portugal barremian-stage mudstone-formations siltstone-formations sandstone-formations paleontology-in-portugal

Want to explore this topic further?

Ask Mako anything about Papo Seco Formation — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report