{"refrec":{"BRefID":233943,"RR":"<b>Jagt, J.W.M.; Goolaerts, S.; Jagt-Yazykova, E.A.; Cremers, G.; Verhesen, W.</b> (2006). First record of <i>Phylloptychoceras</i> (Ammonoidea) from the Maastrichtian type area, The Netherlands. <i>Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 76</i>: 97-103","BEntID":225627,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":null,"RefStringPartII":". <i>Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 76</i>: 97-103","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Jagt, J.W.M.; Goolaerts, S.; Jagt-Yazykova, E.A.; Cremers, G.; Verhesen, W.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Jagt, J.W.M. <i>et al.</i>","Englishabstract":"To date, the two highest units (Nekum and Meerssen members) of the Maastricht Formation in the Maastrichtian type area (southeast Netherlands, northeast Belgium) have yielded some twenty ammonite species, the majority of which are heteromorph. Baculitids and scaphitids predominate, while diplomoceratines and nostoceratids are extremely rare and do not appear to range higher than the basal portion (subunit IVf-1) of the Meerssen Member. From subunits IVf-5 and IVf-6 of that unit as exposed at the quarries of ENCI-Heidelberg Cement Group (Maastricht) and Ankerpoort-Curfs (Geulhem), two specimens of the polyptychoceratine <i>Phylloptychoceras</i> cf. <i>sipho</i> have recently been collected, from an interval a few metres below the Cretaceous/Paleogene (K/Pg) boundary. Elsewhere in Europe, <i>Ph. sipho</i> has previously been recorded from the uppermost Maastrichtian of Denmark and the lower upper Maastrichtian of the Bay of Biscay sections (France, Spain).","AbstractOtherLang":"Dans les deux unités supérieures (les membres Nekum et Meerssen) de la Formation de Maastricht dans la région stratotypique du Maastrichtien (sud-est des Pays-Bas, nord-est de la Belgique) une vingtaine d'espèces d'ammonites ont été récoltés, pour la plupart hétéromorphes. Les baculites et les scaphites sont nombreux mais au contraire les diplomoceratines et les nostoceratidés sont extrêmement rares et ne paraissent ne pas dépasser la partie basale (sous-unité IVf-1 du membre Meerssen). Des sous-unités IVf-5 et IVf-6 de ce membre tels qu'elles sont exposées dans les carrières ENCI-Heidelberg Cement Group (Maastricht) et Ankerpoort-Curfs (Geulhem), deux specimens du polyptychoceratine <i>Phylloptychoceras</i> cf. <i>sipho</i> ont récemment été récoltés d'un intervalle quelques mètres en dessous de la limite Crétacé/Paléogène (K/Pg). Ailleurs en Europe <i>Ph. sipho</i> était connu du Maastrichtien terminal au Danemark et de la partie inférieure du Maastrichtien supérieur dans les coupes du Golfe de Gascogne (France et Espagne).","BibLvlCode":"AS","StandardTitle":"First record of <i>Phylloptychoceras</i> (Ammonoidea) from the Maastrichtian type area, The Netherlands","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-07-02 08:58:19.190595","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Ammonoidea, Diplomoceratidae, Polyptychoceratinae, Phylloptychoceras, type Maastrichtian, The Netherlands","OtherDescriptors":null,"Notes":null,"AnaPub":2006,"MonPub":null,"DateUpdate":"2014-02-27","DateCreate":"2014-02-27","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":233943,"PubliDate":2006,"Pagination":"97-103","XtraPublOfAnaID":null,"ISBN":null,"Volume":"76","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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