Late Turonian polychaete communities recorded in the hemipelagic sediments of the Bohemian Cretaceous Basin (Teplice Formation, Ohře and Dresden districts)

Bulletin of geosciences

Kočí T¹  Sklenář J¹  Jäger M¹ 

关键词: Sabellidae;    Serpulidae;    Spirorbinae;    Upper Cretaceous;    palaeoecology;    encrusters;    soft-bottom;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

TherelativelyrichsabellidandserpulidpolychaeteoryctocenosesofthehemipelagicUpperTuronianoftheBohemianCretaceousBasinareherebyrevised.SevenspeciesfromsixgenerawereidentifiedanddescribedfromthepresentkeylocalityofÚpohlavynearLovosice.OngoingrevisionofpreviouslypublishedliteratureaswellastherecentlycollectedmaterialresultedineightpolychaetespeciesfromsevengenerabeingidentifiedfromthehemipelagicLateTuroniansedimentsofthebasin:sabellidsGlomerulaplexus(J.deC.Sowerby),G.lombricus(Defrance)andserpulidsPyrgopolon(Septenaria)macropus(J.deC.Sowerby),Neovermiliaampullacea(J.deC.Sowerby),Dorsoserpulawegneri(Jäger),Serpula?(Cementula?)biplicata(Reuss),JosephellasubanulataRegenhardtandNeomicrorbiscrenatostriatus(MünsterinGoldfuss)withthesubspeciesN.c.crenatostriatus.DatagainedfromtheÚpohlavyquarryallowsusnotonlytoaccomplishtherevisionpresentedhere,butalsodeepenourknowledgeoflifestrategiesandpaleoecologyofthetubiculouspolychaeteslivinginsoftbottomconditionsofashallow,epicontinentalsea.AmongotherfindingsthestrongtendencytowardsacrypticmodeoflifeinNeovermiliaampullaceaisdiscussedandanextraordinarilywellpreservedsampleofGlomerulaplexusreefletsnetworkisdocumented.TwogroupswithdifferentecologicalamplitudehavebeenrecognisedintheÚpohlavypolychaetecommunities.

【 授权许可】

Unknown