{"refrec":{"BRefID":220001,"RR":"<b>Casier, J.-G.</b> (1989). Paléoécologie des Ostracodes au niveau de la limite des étages Frasnien et Famennnien, à Senzeilles. <i>Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 59</i>: 79-93","BEntID":211734,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":null,"RefStringPartII":". <i>Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 59</i>: 79-93","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Casier, J.-G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Casier, J.-G.","Englishabstract":"Study of the ostracods of the Frasnian-Famennian boundary in Senzeilles (Dinant Basin, Belgium) confirms the existence of shallow, poorly oxygenated waters in Palaeotethys during the late Frasnian. These environments are responsible for the disappearance of mud-mounds and for the sedimentation of the so-called « Matagne Shales » which are rich in Entomozoacea and Cypridinacea. The faunal change on which the Frasnian-Famennian boundary was defined in last century by GOSSELET corresponds to Ihe gradual colonization of such an environment after ihe improvement of the oxygen supply. The extinction rate of the OStracods near the Frasnian-Famennian boundary is not abnormal.","AbstractOtherLang":"L'étude des Ostracodes au niveau de la limite des étages Frasnien et Famennien, à Senzeilles (Bassin de Dinant, Belgique) confirme l'existence d'environnements marins pauvres en oxygène dissous dans les milieux peu profonds de la Paléotéthys. Ceux-ci sont responsables de la disparition de nombreux « mud-mounds » et de la sédimentation des schistes à aspect « Matagne »» qui sont riches en Entomozoacea et Cypridinacea. Le renouvellement faunique sur lequel GOSSELET s'est basé au siècle dernier pour fixer la limite des étages Frasnien et Famennien, correspond à la recolonisation progressive d'un tel environnement après amélioration des conditions d'oxygénation. Les Ostracodes ne présentent pas un taux d'extinction anormal au niveau de cette limite.","BibLvlCode":"AS","StandardTitle":"Paléoécologie des Ostracodes au niveau de la limite des étages Frasnien et Famennnien, à Senzeilles","OrigTitleLangCode":"fr","OrigTitleLangCodeExtended":"fre","OrigTitleLangID":22,"DateLastModified":{"date":"2025-07-02 08:33:14.980000","timezone_type":1,"timezone":"+00:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Ostracods, Frasnian-Famennian Boundary, Belgium, Paleoecology, Extinction, Ostracodes, Limite Frasnien-Famennien, Belgique, Paléoécologie","OtherDescriptors":null,"Notes":null,"AnaPub":1989,"MonPub":null,"DateUpdate":"2015-09-03","DateCreate":"2012-11-13","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":220001,"PubliDate":1989,"Pagination":"79-93","XtraPublOfAnaID":null,"ISBN":null,"Volume":"59","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":64308,"SerRR":"Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. 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