Exceptionally preserved Cambrian trilobite digestive system revealed in 3D by synchrotron-radiation X-ray tomographic microscopy. [PDF]
PLoS ONE, 2012 The Cambrian 'Orsten' fauna comprises exceptionally preserved and phosphatised microscopic arthropods. The external morphology of these fossils is well known, but their internal soft-tissue anatomy has remained virtually unknown.
Mats E Eriksson, Fredrik Terfelt
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska +6 more
wiley +1 more source
An in situ shelly fauna from the lower Paleozoic Zapla diamictite of northwestern Argentina: implications for the age of glacial events across Gondwana [PDF]
, 2015 A shelly fauna from the upper part of the Zapla glacial diamictite includes thelingulate brachiopod Orbiculoidea radiata Troedsson, the rhynchonelliforms Dalmanella cf. testudinaria (Dalman) and Paromalomena sp., the bivalve Modiolopsis?
Benedetto, Juan Luis Arnaldo +3 more
core +2 more sources
An electron backscatter diffraction study of geesops: a broader view of trilobite vision? [PDF]
, 2008 The calcite eyes of trilobites have been studied for over 100 years using methods including light microscopy (e.g. Clarke 1889; Campbell 1975; Towe 1973; Clarkson 1979 and Bruton and Haas 2003) and more recently cathodoluminescence (CL) imaging coupled ...
Lee, M.R., Owen, A.W., Torney, C.
core
The first hirnantian (Uppermost Ordovician) Odontopleurid trilobite from western Gondwana (Argentina) [PDF]
, 2014 An odontopleurid trilobite remain is described for the fi rst time from Hirnantian (uppermost Ordovician) rocks of Western Gondwana. Very rare material, represented by a single left librigena, comes from a new fossil locality of the Don Braulio Formation
Halpern, Karen +2 more
core +1 more source
Chronostratigraphic Subdivision of the Cambrian of China
Geologica Acta, 2003 The chronostratigraphic framework for the Cambrian of South China is reviewed. Currently four series and nine stages are recognized. The Cambrian of South China is subdivided into one pre-trilobite-bearing series, the Diandongian Series, and three ...
Sanchi Peng
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Doubts about the crucial role of the rising-tube mechanism in the formation of sunspot groups
, 2014 Some preliminary processing results are presented for a dataset obtained with the Solar Optical Telescope on the Hinode satellite. The idea of the project is to record, nearly simultaneously, the full velocity and magnetic-field vectors in growing active
Buchnev, A. A. +2 more
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Discriminating faunal assemblages and their palaeoecology based on museum collections : the Carboniferous Hurlet and Index limestones of western Scotland [PDF]
, 2010 Historical collections of Scottish Carboniferous macrofossils stored at the British Geological Survey (BGS), Edinburgh include the sole remaining sources of palaeontological data from numerous localities.
Akhurst, M.C. +3 more
core +2 more sources
The potential functions of mechanoreceptors found on trilobite larva of Limulus polyphemus (Linnaeus, 1758) [PDF]
Arthropods, 2022 In this study trilobite larvae and early juvenile stages of Limulus polyphemus (Linnaeus, 1758) are examined using light microscopy and scanning electron microscopy to examine the mechanoreceptors present on the cuticle.
John A. Fornshell
doaj
Putative Analogs of Pyrite Suns Forming in Proglacial Alaska Mudflats
Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.Abstract Disc‐shaped pyrite suns of the Pennsylvanian age Anna Shale are thought to have formed where pressure restricted pyrite crystal growth to a flattened disc shape during diagenesis at the Anna Shale and the underlying Herrin coal boundary.
Heather L. Fair +2 more
wiley +1 more source