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Wedmann S.,Senckenberg Institute | Poschmann M.,Generaldirektion Kulturelles Erbe RLP | Hornschemeyer T.,University of Gottingen
Palaeobiodiversity and Palaeoenvironments | Year: 2010

Fossil insects can provide unique insights into evolutionary history, and their study has become increasingly important in recent decades. In this paper, we give an overview of the insect taphocoenosis from the upper Oligocene Enspel Lagerstätte (Germany) and discuss taphonomic similarities with other localities. Among the fossil insects identified, terrestrial groups are highly dominant, with march flies (Bibionidae) and weevils (Curculionoidea) being the most common groups; aquatic insects are rare. We provide a detailed survey of the represented taxa, including new records of a predaceous diving beetle (Dytiscidae), a soldier beetle (Cantharidae) and mayfly larvae (Ephemeroptera). Updated information on the ants (Formicidae) and reticulated beetles (Cupedidae) is reported. The palaeoclimatic and palaeobiogeographic inferences that can be drawn from the represented groups are discussed. Studies on the insects from Enspel indicate a warm temperate climate. Several records document that the distribution of many insect groups in the Oligocene was distinctly wider than it is today. © 2009 Senckenberg, Gesellschaft für Naturforschung and Springer.

Poschmann M.,Generaldirektion Kulturelles Erbe RLP | Schindler T.,Buro fur Palaontologie | Uhl D.,Senckenberg Forschungsinstitut und Naturmuseum
Palaeobiodiversity and Palaeoenvironments | Year: 2010

Almost two decades ago, the Generaldirektion Kulturelles Erbe Rheinland-Pfalz initiated annual field campaigns in order to investigate geological and palaeobiological aspects of the Fossil-Lagerstätte Enspel, an upper Oligocene crater lake. Since then, the fossil-bearing 'oilshale' became more and more exposed due to the removal of the overlying basalt, which is still being commercially exploited. This contribution briefly summarizes the current knowledge that accumulatedmainly within the last 20 years, gives a taxonomic listing of the fossil association, and includes a bibliography. © 2009 Senckenberg, Gesellschaft für Naturforschung and Springer.

Kuhl G.,Steinmann Institute for Geology | Poschmann M.,Generaldirektion Kulturelles Erbe RLP | Rust J.,Steinmann Institute for Geology
Geological Magazine | Year: 2013

A new sea spider (Arthropoda: Pycnogonida) from the Lower Devonian Hunsrück Slate (Germany) is described as Pentapantopus vogteli gen. et sp. nov. This is the fifth pycnogonid species known from this exceptional fossil Lagerstätte. The most conspicuous character of the new species is the presence of five pairs of walking legs. This character, in concert with a reduced abdomen, indicates a phylogenetic position of P. vogteli among the crown group pycnogonids. P. vogteli extends the knowledge of fossil pycnogonid body plans and underlines the significance of the Hunsrück Slate, as this locality shows the highest diversity of sea spiders for the entire fossil record so far. Copyright © Cambridge University Press 2013.

Poschmann M.,Generaldirektion Kulturelles Erbe RLP | Dunlop J.A.,Humboldt University of Berlin | Bethoux O.,CNRS Center for Research on Palaeobiodiversity and Palaeoenvironments | Galtier J.,CIRAD - Agricultural Research for Development
Palaontologische Zeitschrift | Year: 2016

Trigonotarbids and scorpions (Arachnida: Trigonotarbida, Scorpiones) are described from the Upper Carboniferous (Late Stephanian/Late Gzehlian) of the Graissessac Basin in the Central Massif outcropping in southern France. This is the first record of trigonotarbids and the first thorough description of scorpions from this locality. Trigonotarbids are an extinct order and the new fossils express a distinctly ornamented dorsal surface and lobed carapaces implicit of the so-called ‘eophrynid-assemblage’; probably a derived clade. Although closest to Eophrynidae, the character combination preserved precludes unequivocal assignment to any of the currently recognized families, but appears to be unique among trigonotarbids and prompts us to propose the name Aenigmatarbus rasteli gen. et sp. nov. to accommodate these novel specimens. The Graissessac scorpions are preserved in dorsal view only, but two distinct morphotypes could be recognized. These are tentatively referred to here as two typical Coal Measures genera: namely the mesoscorpion Eoscorpius sp. and the more derived orthostern Compsoscorpius sp., respectively. © 2016 Paläontologische Gesellschaft

Poschmann M.,Generaldirektion Kulturelles Erbe RLP | Dunlop J.A.,Humboldt University of Berlin
Palaontologische Zeitschrift | Year: 2012

Seven further specimens of the hitherto only known Devonian phalangiotarbid Devonotarbus Poschmann, Anderson and Dunlop, 2005 are described. Thus, the genus is recorded from four different localities of Siegenian (Hombach and Burglahr) and Lower Emsian (Willwerath and Alken) age, respectively, but the specific identity of Siegenian and Emsian specimens remains unproven. The new material suggests that this Devonian phalangiotarbid possessed more than six eye lenses, tergites five and six fused into a diplotergite, and an almost terminally situated anal operculum. It thus notably deviates morphologically from its younger Permocarboniferous relatives, and a new family, Devonotarbidae nov. fam., is proposed to accommodate Devonotarbus. © 2012 Springer-Verlag.

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