title: Arauz Formation
text: # Arauz Formation
  
  The Arauz Formation is an Emsian fossiliferous stratigraphic unit in Spain. 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.
  
  ## Fossil content
  
  The following fossils have been reported from the formation:
  
  * 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.
  