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First record of Phylloptychoceras (Ammonoidea) from the Maastrichtian type area, The Netherlands
Jagt, J.W.M.; Goolaerts, S.; Jagt-Yazykova, E.A.; Cremers, G.; Verhesen, W. (2006). First record of Phylloptychoceras (Ammonoidea) from the Maastrichtian type area, The Netherlands. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 76: 97-103
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Aardwetenschappen = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre. KBIN: Brussel. ISSN 0374-6291, more
Peer reviewed article  
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Keywords
    Geological time > Phanerozoic > Geological time > Mesozoic > Cretaceous > Cretaceous, Upper > Maastrichtian
    Ammonoida † [WoRMS]; Diplomoceratidae; Phylloptychoceras; Polyptychoceratinae
    Netherlands, Limburg (Province)
    Marine/Coastal
Author keywords
    Ammonoidea, Diplomoceratidae, Polyptychoceratinae, Phylloptychoceras, type Maastrichtian, The Netherlands
Authors  Top 
  • Jagt, J.W.M.
  • Goolaerts, S., more
  • Jagt-Yazykova, E.A.
  • Cremers, G.
  • Verhesen, W.
Abstract
    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 Phylloptychoceras cf. sipho have recently been collected, from an interval a few metres below the Cretaceous/Paleogene (K/Pg) boundary. Elsewhere in Europe, Ph. sipho has previously been recorded from the uppermost Maastrichtian of Denmark and the lower upper Maastrichtian of the Bay of Biscay sections (France, Spain).
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