Callovian (Middle Jurassic) cyclostome bryozoans from the Zalas Quarry, southern Poland

Bulletin of geosciences

Taylor PD¹  Krobicki M¹  Hara U¹  ZatoÅ„ M¹ 

关键词: Bryozoa;    Cyclostomata;    Callovian;    Jurassic;    Poland;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

Thespecimen-richanddiversebryozoanfaunafromtheCallovianhardgroundatZalasQuarryinsouthernPolandisdescribed.Twenty-twotaxaofcyclostomesarerecorded,ofwhichthreespeciesareproposedasnew:Microeciellacalloviana,ReptomultisparsaviskovaeandMesonoporawalteri.Duetopreservationalproblemsandaninsufficientnumberoffertilecolonies,species-leveldeterminationoffourteenformswasnotpossible.Themostcommonbryozoanspresentaresheet-likebereniciformcolonies,withuniserialrunnersandoligoserialribbonslessabundant.ThenumberoftheCalloviantaxapresentintheZalasQuarryisverysimilartotheUpperBathonian-LowerCallovianbryozoanassemblagefromtheclassiclocalityofBalininsouthernPoland.TakingthestrictlyCallovianageintoaccount,theZalasassemblageisthemostdiverseforthatageevernoted.

【 授权许可】

Unknown