Results 41 to 50 of about 841 (169)
Insights into a 429-million-year-old compound eye
Scientific Reports, 2020 In all arthropods the plesiomorphic (ancestral character state) kind of visual system commonly is considered to be the compound eye. Here we are able to show the excellently preserved internal structures of the compound eye of a 429 Mya old Silurian ...
Brigitte Schoenemann +1 more
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Palaeozoic correlations and the Palaeogeography of the Sibumasu (Shan-Thai) Terrane - a brief review [PDF]
Research & Knowledge, 2016 Furongian sandstones yield shallow-water trilobite faunas along the length of the Sibumasu Terrane in the four regions of NW Malaysia (Langkawi), southern Thailand (Satun), the Shan States of Myanmar and the Baoshan Block of western Yunnan.
Clive Burrett +2 more
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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
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Sedimentology, EarlyView.ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee +2 more
wiley +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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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
Journal of Raman Spectroscopy, Volume 57, Issue 8, Page 1463-1480, August 2026.Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
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Micropollutants and the Restructuring of Microbial Resilience in the Anthropocene
Global Change Biology, Volume 32, Issue 8, August 2026.Conceptual framework linking anthropogenic chemical complexity to the restructuring of microbial resilience in the Anthropocene. Persistent, low‐dose chemical mixtures can reorganize microbial coordination networks, regulatory and metabolic processes, and ecological memory, thereby altering functional redundancy, adaptive capacity, and disturbance ...
Despo Fatta‐Kassinos +3 more
wiley +1 more source
V.—On the Structure of Trilobites [PDF]
Geological Magazine, 1871 In the Geological Magazine for July, 1871, Plate VIII. pp. 289–294, I published an article on the above subject, giving my views of the appendages of Trilobites, and reproducing the figure of Asaphus platycephalus, Stokes, showing traces of eight pairs of locomotory appendages, discovered by Mr.
openaire +4 more sources
Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract The collisional evolution of the micro‐blocks in the northeastern Tibetan Plateau is relatively well constrained. However, the reason why a fragment of the North China Block, the Olongbuluke Block, became separated from North China by the Central Qilian Block (a fragment of the South China Block) remains unclear.
Teng Wang +4 more
wiley +1 more source