Assmann T.,Lüneburg University |
Boutaud E.,Lüneburg University |
Drees C.,University of Hamburg |
Marcus T.,Lüneburg University |
And 5 more authors.
African Invertebrates | Year: 2017
Two new species of the genus Lebistina Motschulsky, 1864 are described: Lebistina rehagei Assmann, Starke & Terlutter, sp. n., type locality: Kenya: north of Ngomeni. Members of this macropterous species are distinguished from all other known species of the genus by their elytral coloration pattern, large body length, shape of the median lobe of the aedeagus, and shape of the mentum with one tooth showing two small tips. Lebistina petersae Assmann, Drees & Zumstein, sp. n., type locality: Kenya, Tsavo East National Park. Members of this macropterous species differ from all other Lebistina species by their elytral coloration, short body length, shape of the median lobe of the aedeagus, and shape of the mentum with its sinuosity and two blunt teeth. We provide photographs and discuss the characters, including the shape of the mentum which deviates from the classical delineation of the genus Lebistina. © Thorsten Assmann et al.
Haug C.,University of Greifswald |
Roy P.V.,Yale University |
Roy P.V.,Ghent University |
Leipner A.,Museum am Scholerberg |
And 4 more authors.
Development Genes and Evolution | Year: 2012
Specimens of Euproops sp. (Xiphosura, Chelicerata) from the Carboniferous Piesberg quarry near Osnabrück, Germany, represent a relatively complete growth series of 10 stages. Based on this growth sequence,morphological changes throughout the ontogeny can be identified. The major change affects the shape of the epimera of the opisthosoma. In earlier stages, they appear very spine-like, whereas in later stages the bases of these spine-like structures become broader; the broadened bases are then successively drawn out distally. In the most mature stage known, the epimera are of trapezoidal shape and approach each other closely to form a complete flange around the thoracetron (0fused tergites of the opisthosoma). These ontogenetic changes question the taxonomic status of different species of Euproops, as the latter appear to correspond to different stages of the ontogenetic series reconstructed from the Piesberg specimens. This means that supposed separate species could, in fact, represent different growth stages of a single species. It could alternatively indicate that heterochrony (0evolutionary change of developmental timing) plays an important role in the evolution of Xiphosura. We propose a holomorph approach, i.e., reconstructing ontogenetic sequences for fossil and extant species as a sound basis for a taxonomic, phylogenetic, and evolutionary discussion of Xiphosura. © Springer-Verlag 2012.
Lanser K.-P.,LWL Museum fur Naturkunde |
Heimhofer U.,Leibniz University of Hanover
Palaontologische Zeitschrift | Year: 2013
Theropod dinosaur teeth from a Lower Cretaceous karst filling in Devonian reef limestone (Massenkalk) located near the village of Balve on the northern margin of the Rhenish Massif, Germany, are described. Palynological evidence indicates that the karst filling took place during the Late Barremian to (Early) Aptian time interval. Palaeontological excavations carried out during several years at the Balve locality yielded remains of various animal groups, including sharks, amphibians, turtles, crocodiles, pterosaurs, herbivore dinosaurs, and, rarely, mammals. Of particular interest is an assemblage of different theropod dinosaur teeth, which has been characterized with the help of dental comparative morphometry. Based on these analyses, the teeth material from the Balve excavation can be assigned to five morphological groupings including dromaeosaurid and tyrannosauroid theropods. Morphological comparison of the theropod dinosaur teeth record with finds from other fossil localities in western and northwestern Europe of similar age shows clear similarities, but also some distinct differences. © 2013 Springer-Verlag Berlin Heidelberg.
Preservation and taphonomy of Stramentum (Stramentum) pulchellum (SOWERBY, 1843) (Crustacea: Stramentidae) from the Lower Turanian of the Teutoburger Wald (Nordrhein-Westfalen, Germany) [Fossilerhaltung und Taphonomie von Stramentum (Stramentum) pulchellum (SOWERBY, 1843) (Crustacea: Stramentidae) aus dem Unterturon des Teutoburger Waldes (Nordrhein-Westfalen, Deutschland)]
Schollmann L.,LWL Museum fur Naturkunde |
Hauschke N.,Martin Luther University of Halle Wittenberg
Geologie und Palaeontologie in Westfalen | Year: 2012
During an excavation project of the LWL Museum of Natural History in Münster, Nordrhein-Westfalen (LWL-Museum für Naturkunde, Paläontologische Bodendenkmalpflege), in the Hohne quarry of the Dyckerhoff AG in Lengerich 20 skeletons or parts of skeletons of the stalked cirripede Stramentum (Stramentum) pulchellum were excavated. The layers in which the fossils were found are black shales of lower Turanian age. The mostly intact and only weakly disarticulated finds are described. It is supposed that cirripedes as larval stages also fixed themselves oriented to shells of live ammonites. In the case of settlement on planispirally coiled ammonites cirripedes live cycles ended abruptly at that time when smothered by the growing ammonite shell. However, the results suggest that the cirripedes were torn away from their firm base. The kind of settlement, the taphonomy and the potential of fossilization of Stramentids is discussed.
Koch L.,Heinrich Heine Str. 5 |
Lemke U.,Bergstr. 25a |
Schollmann L.,LWL Museum fur Naturkunde
Geologie und Palaeontologie in Westfalen | Year: 2011
In this further paper on trilobites from the Ordovician of the Ebbe Anticline (Rhenish Massif, Germany) new finds of trilobites as well as hitherto unconsidered specimens are described and figured, and the first prove of a raphiophorid trilobite in the German Ordovician is recorded. Additionally a general survey of all Ordovician Ebbe localities is given especially of the Kiesbert locality, where the office for "Paläontologische Bodendenkmalpflege Westfalen-Lippe" carried out an excavation campaign. Recent microstratigraphical studies on chitinozoans led to a more exact subdivision of the Ordovician succession of the Herscheid group. The distribution of particular trilobite species is reflected in the palaeobiogeographical context.
Hauschke N.,Martin Luther University of Halle Wittenberg |
Schollmann L.,LWL Museum fur Naturkunde |
Keupp H.,Free University of Berlin
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen | Year: 2011
Scalpelliform cirripedes [order Scalpelliformes BUCKERIDGE & NEWMAN, 2006] of the genus Stramentum LOGAN are known from different mid- to early Late Cretaceous (Albian-Santonian) faciès in Europe, North, Central and South America, the Near East, Africa and Japan. Stramentum (S.) pulchellum (G.B. SOWERBY) occurs in the Cenomanian and Turanian of England, northern Ireland, northwest Germany and the Czech Republic. Generally, only isolated plates of the capitulum or peduncle are found, for instance in white chalk faciès; finds of (near-)complete, articulated skeletons are rare. However, articulated stramentids appear to be common in two exceptional cases; either when cirripede larvae settled on planispirally coiled ammonites, reached adulthood as epizoans but were then smothered by the growing ammonite shell, or when cirripedes were embedded in "black shales". Below we describe a stramentid from a "black shale" faciès of latest Cenomanian age (Neocardioceras juddii ammonite Zone) at Lengerich (northwest Germany), which is attached by the base of the peduncle to the orthoconic shell of the heteromorph (baculitid) ammonite Sciponoceras sp. For the first time, the orientation between cirripede and ammonite shell provides evidence of the nearhorizontal swimming position of this heteromorph, similar to extant sepiids. The oriented attachment of stramentids to planispirally coiled ammonites, as well as to orthocones, document that these cephalopods did not swim backwards, according to the thrust principle, but rather moved forwards. ©2011 E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany.
Lanser K.-P.,LWL Museum fur Naturkunde
Geologie und Palaeontologie in Westfalen | Year: 2010
Finds of elephant remains are described. An evaluation of the partly well preserved molar teeth showed that it was a representative of the southern elephants with predominantly archaic tooth characters. There are similarities with the tooth characters of Archidiskodon gromovi GARRUT & ALEXEEVA from the Khapry Sands, Sea of Azov in Russia. In comparison with published data on Archidiskodon meridionalis NESTI from the Arno Valley in Italy the present finds indicate an older age. This interpretation is supported by the results of palaeomagnetic studies which indicate a position in either the Olduvai or Reunion Event of the Matuyama Epoch, corresponding to age ranges of 1.77 to 1.95 and 2.14 to 2.19 million years respectively, and hence the Tiglian warm period at the end of the Pliocene. The elephant remains are associated with teeth of hippopotamus (Hippopotamus cf. antiquus), documenting an earlier record of hippopotamus in central Europe.
Hubner T.R.,LWL Museum fur Naturkunde
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen | Year: 2016
The Sauerland mountain ridge in NW Germany is well known for its high number of caves and fissures, which are developed within Devonian reef limestones. Several karst events took place in geological history and the resulting cavities were often refilled by sediment. One of these karst fissures near Balve in the Remscheid-Altena Anticline contains sediments of Barremian to Aptian age with fossil remains of fish, turtles, crocodiles, pterosaurs, dinosaurs, and mammals. Among them, a single, extraordinarily preserved, minuscule shark tooth is indistinguishable in its preservation from the Cretaceous fossils. Nevertheless, several characters, such as an orolingual button on the surface of its base clearly identify it as the tooth of Phoebodus sophiae, an ancient shark taxon approximately 255 million years older than the Cretaceous vertebrate remains in the karst fissure. It is the first unambiguous evidence of the Phoebodus type species in Germany. © 2016 E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany.
Evidence of pterosaurs from a Lower Cretaceous period karst filling in northern Sauerland (Rhenish Massif, Germany) [Nachweise von Pterosauriern aus einer unterkreidezeitlichen Karstfüllung im nördlichen Sauerland (Rheinisches Schiefergebirge, Deutschland)]
Lanser K.P.,LWL Museum fur Naturkunde
Geologie und Palaeontologie in Westfalen | Year: 2015
This paper describes pterosaur teeth from a Lower Cretaceous karst filling in Devonian reef limestone (Massenkalk) located near the village of Balve on the northern margin of the Rhenish Massif, Germany. A palaeontological excavation over several years yielded remains of various animal groups, including sharks, amphibians, lizards, turtles, crocodiles, dinosaurs, including saurischians and ornithischians, and miscellaneous mammals. Of particular interest is an ensemble of pterosaur teeth, which has been compared to similar finds from other regions. Based on these analyses, the pterosaur teeth from the Balve excavation can be assigned to the group of ornithocheiroid Pterosaurs. A morphological comparison of the pterosaur teeth to finds from other fossil localities of similar age shows clear similarities, but also some differences.