The upper Katian (Ordovician) bryozoans from the Eastern Iberian Chain (NE Spain)

Bulletin of geosciences

Jiménez-Sánchez A¹ 

关键词: Stenolaemata;    Bryozoans;    upper Katian;    Upper Ordovician;    Iberian Chains;    NE Spain;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

TheupperKatian(UpperOrdovician)bryozoansfromtheIberianChains(NESpain)aredescribed.Twenty-threespeciesareidentified,fiveofthemarenew,sevenwerealreadyidentifiedinotherpaleocontinentsandMediterraneanlocalities,fourareprovisionallyreferredtootherknownspecies,andsevenareundeterminedspecies.Allofthembelongto22generaassignedto14families,andtooneincertaesedisgenera.ThefiveStenolaemataorders(Cryptostomata,Cyclostomata,Cystoporata,FenestrataandTrepostomata)arerepresentedhere,TrepostomataandCryptostomatabeingthemostabundantanddiverse.ThetrepostomefamilyHalloporidaeistheonewiththehighestdiversity,with4generaand5speciesdescribedhere.ThefivenewspeciesarethecryptostomesPseudostictoporellaiberiensissp.nov.,characterizedbythepresenceofsuperiorhemiseptaintheautozooecia,andProphyllodictyajavierisp.nov.,alsocharacterizedbythepresenceofsuperiorhemiseptaintheautozooeciaandbyitssmallexilazooecia;thecystoporateCeramoporellainclinatasp.nov.,whosemaindiagnosticcharacteristheconstantautozooecialinclination;andthetrepostomatesDybowskitesernstisp.nov.,easilyrecognizablebyitslargeautozooecialandmesozooecialapertures,aswellasbyitslargeacanthostylesandTrematoporaacanthostylitasp.nov.,mainlycharacterizedbytheabsenceofdiaphragmsinitsmesozooeciaandnumerous,largeacanthostyles

【 授权许可】

Unknown