Arauz Formation

Arauz Formation
Stratigraphic range: Emsian ~407–392 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Unit of	Abadia Group
Sub-units	Lezna & Requejada Members
Lithology
Primary	Marl
Other	Shale, limestone
Location
Coordinates	43.0°N 0.9°W / 43.0; -0.9
Approximate paleocoordinates	43.0°S 35.4°E / -43.0; 35.4
Region	Palencia
Country	Spain
Type section
Named for	Arauz River
Arauz Formation (Spain)

The Arauz Formation is an Emsian fossiliferous stratigraphic unit in Spain.[1] It is a member of the Abadia Group. It is situated in the Province of Palencia, North Spain. It is in the north of Natural Park of Fuentes Carrionas and Fuente Cobre-Montaña Palentina where the Rio Arauz lies. It is from the Devonian of Spain.[2]

Fossil content

The following fossils have been reported from the formation:[1]

• Trilobites
  • Kayserops obsoletus
  • Metacanthina cf. asnoensis
  • Leonaspis sp.
  • Metacanthina sp.
  • Odontochile sp.
  • Otarion (Maurotarion) sp.
  • Xiphogonium sp.
  • Phacopida indet.
• Cephalopods
  • Erbenoceras advolvens
  • Fidelites ruppachensis
  • Gyroceratites gracilis
  • G. aff. laevis
  • Latanarcestes (Latanarcestes) noeggerathi
  • Mimagoniatites bohemicus
  • Mimosphinctes sp.
• Corals
  • Cleistodictyum porosum
  • Pleurodictyum microspinosum
  • Procterodictyum polentinoi
  • Combophyllum sp.
  • Rugosa indet.
• Conodonts
  • Icriodus bilatericrescens
  • I. corniger
  • I. culicellus
  • I. fusiformis
  • I. sigmoidalis
  • Ozarkodina steinhornensis
  • Polygnathus dehiscens
  • P. gronbergi
  • P. perbonus
  • Icriodus sp.
• Tentaculita
  • Nowakia barrandei
  • N. cancellata
  • N. elegans
  • N. richteri
• Rhynchonellata
  • Arduspirifer arduennensis
  • Bifida lepida
  • Euryspirifer paradoxus
  • Holynatrypa mirabilis
  • Mauispirifer scutiformis
  • Prokopia bouskai
  • Schizophoria vulvaria
• Strophomenata
  • Bojodouvillina (Bojodouvillina) morzakeci
  • Crinostrophia aff. elegans
  • Eodevonaria cf. jahnkei
  • Plectodonta (Dalejodiscus) minor
  • Strophochonetes sp.

See also

• List of fossiliferous stratigraphic units in Spain

References

1. Arauz Formation in the Paleobiology Database
2. Silur und Devon im Arauz-Gebiet (Prov. Palencia, N-Spanien). H. Jahnke, A. Henn, H. Mader and J. Schweineberg, 1983, Newsletters on Stratigraphy, 13(1), pages 40-66, doi:10.1127/nos/13/1983/40