Details of the paper
| Title | An atypical fauna in the Lower Devonian Hunsrück Slate of Germany |
| Year: | 2007 |
| Language: | English |
| Source: | Paläontologische Zeitschrift, Vol. 81/2:181-204 |
| Keywords: | Hunsrück Slate, Lower Emsian, Karschheck and Lingenbach quarries, Wisper Trough, "Rhenish" fauna, palaeoecology, community structures, palaeobiology, biostratigraphy |
| Summary: | This article describes an overall "Rhenish" neritic fauna under the heading "atypical"; that means in contrast to the famous fossils of the conservation Lagerstätte. The slatefossils were collected in two quarries WNW and NE of Bundenbach (Lingenbach and Karschheck, respectively) and resemble those of the Taunus most. Their geologic age is, based on the spiriferids as stratigraphically diagnostic species, early Emsian, Ulmen Substage. The position and orientation of Viriatellina (Novakia) gemuendina on an orthoconic cephalopod suggests, that tentaculitoids are molluscs, but can be no cephalopods. New discoveries for the Hunsrück Slate are the crinoids Orthocrinus simplex, Ctenocrinus typus and Diamenocrinus stellatus, a radicular "runner"-like attachment structure at the distal end of a pentagonal stem belonging to an unknown crinoid, three rugose corals "Zaphrentis" sp. with a needle-like pin at their base to stand in an upright position, the bivalve Praecardium sp. with only few, robust ?thorny ribs with broad interspaces, relative large archaeogastropods with trochiform (?Bembexia) and (plano)convex shells, the trilobite Paracryphaeus sp. and a pentamerid brachiopod (?Biseptum sp.). In Karschheck, a further Hunsrück Slate-specimen of a spiriferid (Brachyspirifer explanatus) with the spiralia of the lophophore preserved, could be found. In the systematic part of the article, the crinoid Orthocrinus simplex is redescribed. Also, two new species are introduced: the rugose coral Volgerophyllum karschheckkensis n. g. n. sp. (on the photograph from G. Oleschinski, University Bonn), and the crinoid Acanthocrinus spinosus n. sp. |
| Reaction 1: | The research of De Baets et al. (2013): "Emsian Ammonoidea and the age of the Hunsrück Slate (Rhenish Mountains, Western Germany)" in Palaeontographica, Abt. A, Volume 299, Issues 1-6: 1-113, refers several times to the Südkamp (2007) paper. This concerns the selective collecting of "valuable" fossils by the splitters, the recently revealed remarkable details of fossils from a few rich outcrops (Bundenbach-Gemünden area), the debate over the age and chronological range of the Hunsrück Slate, the not only free-living and planktonic habitats for some forms or ontogenetic stages of dacryoconarids and the need to study not only stratigraphically important groups in Fossillagerstätten, but all faunal elements. Also, the encrusted Mimagoniatites cf. falcistria from the Karschheck Quarry near Gemünden proved after closer examination to be no ammonoid at all. Finally, the painting/life impression produced by Eleonore Ware is partly (crinoids, trilobite, orthoconic nautiloid) based on Südkamp (2007). |
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