Stranger than a scorpion: a reassessment of Parioscorpio venator , a problematic arthropod from the Llandoverian Waukesha Lagerstätte

  title={Stranger than a scorpion: a reassessment of
 Parioscorpio venator
 , a problematic arthropod from the Llandoverian Waukesha Lagerst{\"a}tte},
  author={Evan P. Anderson and James D. Schiffbauer and Sarah M. Jacquet and James C. Lamsdell and Joanne Kluessendorf and Donald G. Mikulic},
2 Citations
The first fossil scorpion from Australia
Abstract The fossil record of scorpions in Australia is effectively non-existent. This lack of data is striking as there is evidence for other euchelicerates including eurypterids, spiders, and


A Reduced Labrum in a Cambrian Great-Appendage Euarthropod
Micro-computed tomography is used to demonstrate the presence of a three-dimensionally preserved labrum associated with the mouth opening in juvenile specimens of the megacheiran Leanchoilia illecebrosa from the early Cambrian Chengjiang biota, Southwest China.
A Silurian ancestral scorpion with fossilised internal anatomy illustrating a pathway to arachnid terrestrialisation
A new exceptionally preserved fossil scorpion from the Waukesha Biota of Wisconsin, USA is described, and it shows a combination of primitive marine chelicerate and derived arachnid characteristics, suggesting that ancestral scorpions were likely capable of forays onto land.
Aquatic stem group myriapods close a gap between molecular divergence dates and the terrestrial fossil record
The Cambrian occurrence of the earliest euthycarcinoids supplies the oldest compelling evidence for an aquatic stem group for either Myriapoda or Hexapoda, previously a lacuna in the body fossil record of these otherwise terrestrial lineages until the Silurian and Devonian.
Paleobiology and taphonomy of exceptionally preserved organisms from the Waukesha Biota (Silurian), Wisconsin, USA
Abstract The Silurian (Llandovery, Telychian) Waukesha Lagerstatte in the Brandon Bridge Formation of Wisconsin, USA, is preserved in a dolomitic plattenkalk representing deposition in a
A common arthropod from the Late Ordovician Big Hill Lagerstätte (Michigan) reveals an unexpected ecological diversity within Chasmataspidida
The large body size and well-developed appendage armature of Hop litaspis reveals that chasmataspidids occupied a greater breadth of ecological roles than previously thought, with the abundance of available specimens indicating that Hoplitaspis was an important component of the local community.
Microbial decay analysis challenges interpretation of putative organ systems in Cambrian fuxianhuiids
It is suggested that organic (partly iron mineral-replaced) bulbous structures in the head region, previously interpreted as brain tissue, along with sagittally located organic strands interpreted as part of the cardiovascular system or as nerve cords, may be better explained as microbial biofilms that developed following decomposition of the intestine, muscle and other connective tissues, forming halos surrounding the original organic remains.
New cheloniellid arthropod with large raptorial appendages from the Silurian of Wisconsin, USA
Exceptionally preserved specimens show previously poorly known features including biramous appendages; this is the first cheloniellid to show large, anterior raptorial appendages.
A new crustacean from the Herefordshire (Silurian) Lagerstätte, UK, and its significance in malacostracan evolution
This well-preserved arthropod provides novel insights into the evolution of appendage morphology, tagmosis and the possible respiratory–circulatory physiology of a basal malacostracan.
Burgess Shale fossils illustrate the origin of the mandibulate body plan
The presence of crustaceomorph traits in the Cambrian larvae of various clades basal to Mandibulata is reinterpreted as evidence for the existence of distinct ontogenetic niches among stem arthropods and Hymenocarines now illustrate that the subdivision of the basipod and the presence of proximal endites are likely to have been ancestral conditions critical for the evolution of coxal and pre-coxal features in mandibulates.