On the News | Pincer-wielding 507m-year-old fossil sheds light on evolution of crabs @ The Guardian

On the News @ The Guardian Title:  Pincer-wielding 507m-year-old fossil sheds light on evolution of crabs Excerpt: “A fossilised ancient creature boasting huge pincers resembling can-openers, a hinged two-piece shell and more than 50 pairs of legs has been discovered, shedding light on the evolutionary past of a huge and diverse group of animals. Researchers say the creature, thought to have lived about 507 million years ago during the Cambrian

Just out | Burgess Shale fossils illustrate the origin of the mandibulate body plan @ Nature

Just out @ Nature Burgess Shale fossils illustrate the origin of the mandibulate body plan Author(s) Cédric Aria & Jean-Bernard Caron Abstract: Retracing the evolutionary history of arthropods has been one of the greatest challenges in biology. During the past decade, phylogenetic analyses of morphological and molecular data have coalesced towards the conclusion that Mandibulata, the most diverse and abundant group of animals, is a distinct clade from Chelicerata, in that its

Just out | Trace Fossils from the Brioverian (Ediacaran–Fortunian) in Brittany (NW France) @ Ichnos

Just out @ Ichnos Trace Fossils from the Brioverian (Ediacaran–Fortunian) in Brittany (NW France) Author(s) Romain Gougeon, Didier Néraudeau, Marie-Pierre Dabard, Anne-Catherine Pierson-Wickmann, France Polette, Marc Poujol & Jean-Paul Saint-Martin Abstract: The Ediacaran–Fortunian ichnofauna from Central Brittany (NW France) is revised for the first time since the pioneering work by Lebesconte at the end of the 19th century. The study is based on fossils from the type-localities of the historical

Just out | Modelling enrolment in Cambrian trilobites @ Palaeontology

Just out @ Palaeontology Modelling enrolment in Cambrian trilobites Author(s) Jorge Esteve, Pedro Rubio, Samuel Zamora, Imran A. Rahman Abstract: Trilobites were capable of enroling in different ways based on the flexible articulation of thoracic segments and associated interlocking devices; the type of enrolment (spiral or sphaeroidal) is thought to have largely depended on the coaptative devices that each trilobite used to enclose the body. Based on X-ray microtomography scans

Starfishes and other stars | New Species Reported This Week

Unlike other weeks, no newly described species received considerable media coverage this week. Vertebrata continues dominant in new species reported, but descriptions are very diverse: fishes, dinosaurs, medium-sized mammals, echinoderms, are accompanied by new traces and organisms incerta sedis. Ages are also very diverse, spanning from the Middle Cambrian to the Late Neogene. The new species reported this week come from America (USA, Argentina), Europe (Italy, Czech Republic and Russia), and Asia (China). Full account of fossil species reported this week:

Just out | Chancelloriid Allonnia erjiensis sp. nov. from the Chengjiang Lagerstätte of South China @ Journal of Systematic Palaeontology

Just out @ Journal of Systematic Palaeontology Chancelloriid Allonnia erjiensis sp. nov. from the Chengjiang Lagerstätte of South China Author(s) Hao Yun, Xingliang Zhang & Luoyang Li Abstract: The chancelloriid Allonnia erjiensis sp. nov. is described based on articulated specimens from the Chengjiang fossil Lagerstätte (Cambrian Stage 3 of Series 2), South China. A total of 16 specimens, including three complete individuals, have been recognized, all of which are preserved in mudstones

Just out | The phylogeny of fossil whip spiders @ BMC Evolutionary Biology

Just out @ BMC Evolutionary Biology The phylogeny of fossil whip spiders Author(s) Russell J. Garwood, Jason A. Dunlop, Brian J. Knecht and Thomas A. Hegna Abstract: Background Arachnids are a highly successful group of land-dwelling arthropods. They are major contributors to modern terrestrial ecosystems, and have a deep evolutionary history. Whip spiders (Arachnida, Amblypygi), are one of the smaller arachnid orders with ca. 190 living species. Here we restudy

Just out | New fossil insects from the Anisian (Lower to Middle Muschelkalk) from the Central European Basin (Germany and The Netherlands) @ PalZ

Just out @ PalZ New fossil insects from the Anisian (Lower to Middle Muschelkalk) from the Central European Basin (Germany and The Netherlands) Author(s) Timo van Eldijk, Gerard Goris, Adam Haarhuis, Jos Lankamp, Herman Winkelhorst, Jelle Reumer, André Nel, Torsten Wappler Abstract: The Palaeozoic–Mesozoic transition is characterized not only by the most massive Phanerozoic mass extinction at the end of the Permian period, but also its extensive aftermath and a

Just out | Revision of Dendraena pinnatilobata Němejc from the Pennsylvanian of the Czech Republic @ Bulletin of Geosciences

Just out @ Bulletin of Geosciences Revision of Dendraena pinnatilobata Němejc from the Pennsylvanian of the Czech Republic Author(s) Frojdova J, Pšenička J, Bek J, Martinek K Abstract: Dendraena pinnatilobata Němejc is a Pennsylvanian true fern, which is known from the Stradonice locality (Czech Republic) only. All specimens of Dendraena pinnatilobata are preserved as three-dimensionally in volcaniclastic of Whestone Horizon (Radnice Member, Kladno Formation). Revision of this species includes detail

Just out | Palynological data from sediments of the Hunsruckschiefer type, Lower Devonian of the SW Hunsruck, Germany @ Bulletin of Geosciences

Just out @ Bulletin of Geosciences Palynological data from sediments of the Hunsruckschiefer type, Lower Devonian of the SW Hunsruck, Germany Author(s) Brocke R, Kneidl V, Wilde V, Riegel W Abstract: The Devonian Hunsruckschiefer is an outstanding Palaeozoic Fossillagerstatte, widely known for the exceptional preservation of a highly diverse fossil assemblage at the classical sites of Gemunden and Bundenbach. However, biostratigraphical marker fossils are rare and tectonic deformation in the