The Calizas y margas de Xert Formation or Xert Formation is an Early Cretaceous (late Barremian) geologic formation of the Maestrazgo and Galve Basins in central-eastern Spain. The formation is described as a coastal claystone, with indications of a transgressive episode, marked by the transition from marsh facies, with little marine influence, to marine platform facies evidenced by abundant marine invertebrates.

Fossil content

Dinosaurs

Invertebrates

Flora

Correlation

Early Cretaceous stratigraphy of Iberia
MaAgePaleomap \ BasinsCantabrianOlanyàCamerosMaestrazgoOlieteGalveMorellaSouth IberianPre-beticLusitanian
100CenomanianLa CabanaSopeiraUtrillasMosquerelaCaranguejeira
AltamiraUtrillas
Eguino
125AlbianUllaga - BalmasedaLluçàTraiguera
Monte GrandeEscuchaEscuchaJijona
Itxina - Miono
AptianValmaseda - TellamendiOl Gp. - CastrilloBenassalBenassalOlhos
FontEn Gp. - LezaMorella/OlieteOlieteVillaroyaMorellaCapas RojasAlmargem
Patrocinio - ErnagaSenyúsEn Gp. - JubelaForcallVillaroyaUpper BedoulianFigueira
BarremianVega de PasCabóAbejarXertAlacónXertHuérguinaAssises
PradaArtolesColladoMoutonianumPapo 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
LegendMajor fossiliferous, oofossiliferous, ichnofossiliferous, coproliferous, minor formation
Sources

See also

Bibliography

Further reading

  • G. Cuenca Bescós, O. Amo, J. L. Barco, J. I. Canudo, R. Royo Torres and J. I. Ruiz Omeñaca. 1999. Dinosaurios de Aragón [Dinosaurs of Aragon]. Zubía 17:235-257