Ordovician trilobites from the inlier at le Petit Fond d'Oxhe, Belgium
Dean, W.T. (1991). Ordovician trilobites from the inlier at le Petit Fond d'Oxhe, Belgium. Bull. Kon. Belg. Inst. Natuurwet. Aardwet. = Bull. - Inst. r. sci. nat. Belg., Sci. Terre 61: 135-155
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, meer
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| Trefwoorden |
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| Author keywords |
Trilobites, Ordovician, Taxonomy, Stratigraphy, Belgium, Trilobites, Ordovicien, Taxinomie, Stratigraphie. |
| Abstract |
Ordovician rocks in the Oxhe inlier are assigned to two formations, the junction of which is not exposed and may be faulted. The older, unnamed formation resembles, but is younger than, part of the "Assise de Huy", farther west along the Meuse valley. Rare macrofossils include undetermined phyllocarid crustaceans, graptolites that suggest a Llandeilian age, and trilobites (Corrugatagnostus morea (SALTER, 1864), Dionide jubata RAYMOND, 1925, Ellipsotaphrus monophthalmus (KLOUCEK, 1916)) whose affinities are with faunas in the Llanvirn and Llandeilo of Bohemia, northern England and the Welsh basin. The younger unit, the Oxhe Formation, belongs to the Longvillian Stage (Caradoc). It contains the trilobites Broeggerolithus nicholsoni ( REED, 1910) and Brongniartella minor minor ( SALTER, 1852), part of a Longvillian assemblage widespread in northwestern England, North Wales, Shropshire and southeastern Ireland. Silurian rocks, assigned to the Llandovery on the basis of acritarchs, are seen in a small outcrop at the western end of the Oxhe inlier. Their junction with the Oxhe Formation is not exposed. |
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