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A psammosteid heterostracan (vertebrata: Pteraspidomorphi) from the Emsian (lower Devonian) of the grand duchy of Luxembourg
Delsate, D.; Blieck, A.; Steemans, P. (2004). A psammosteid heterostracan (vertebrata: Pteraspidomorphi) from the Emsian (lower Devonian) of the grand duchy of Luxembourg. Geol. Belg. 7(1-2): 21-26
In: Geologica Belgica. Geologica Belgica: Brussels . ISSN 1374-8505; e-ISSN 2034-1954, more
Peer reviewed article  
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Keywords
    Geological time > Phanerozoic > Paleozoic > Palaeozoic > Devonian > Devonian, Lower > Emsian
    Drepanaspis; Heterostraci; Psammosteidae
    Europe, Luxemburg
    Marine/Coastal
Author keywords
    Psammosteidae, Drepanaspis, new record, Schuttbourg Formation, Clervaux Formation
Authors  Top 
  • Delsate, D.
  • Blieck, A.
  • Steemans, P., more
Abstract
    A fragment of a ventral disc of the head carapace of Drepanaspis sp. is reported for the first time from the Schuttbourg Formation of the Grand Duchy of Luxembourg. This formation is classically attributed to the upper lower Emsian (E1b). However, the fossil content of the locality (Merkholtz South-East quarry), including miospores, macroplants, bivalves, pterygotids, ostracodes and vertebrates, indicates a middle-upper Emsian age. This age is traditionally attributed to the overlying Clervaux Formation (Klerf-Schichten) of Luxembourg and western Germany (E2). This Drepanaspis record is the first record of a psammosteid heterostracan in the Ardenne Massif. Drepanaspis is otherwise known from the Pragian-Emsian of both SW England and western Germany.
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