Sigrid Huld
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View article: Troubles With Tubules: How Do Iron‐Mineral Chemical Gardens Differ From Iron‐Mineralized Sheaths of Iron Oxidizing Bacteria?
Troubles With Tubules: How Do Iron‐Mineral Chemical Gardens Differ From Iron‐Mineralized Sheaths of Iron Oxidizing Bacteria? Open
Microscopic tubules and filaments composed of iron minerals occur in various rock types of all ages. Although typically lacking carbonaceous matter, many are reasonably interpreted as the remains of filamentous microorganisms coated with c…
View article: Experimental Mineralisation of a Filamentous Hydrogenotrophic Methanogen in Carbonate, Phosphate, and Silicate
Experimental Mineralisation of a Filamentous Hydrogenotrophic Methanogen in Carbonate, Phosphate, and Silicate Open
Methanogenic archaea were likely among the earliest organisms to populate the Earth, perhaps contributing to the Archaean greenhouse effect; they are also widely discussed as analogues to any potential life on Mars. However, fossil evidenc…
View article: Chemical Gardens Mimic Electron Paramagnetic Resonance Spectra and Morphology of Biogenic Mn Oxides
Chemical Gardens Mimic Electron Paramagnetic Resonance Spectra and Morphology of Biogenic Mn Oxides Open
Manganese (Mn) oxides are ubiquitous in nature and occur as both biological and abiotic minerals, but empirically distinguishing between the two remains a problem. Recently, electron paramagnetic resonance (EPR) spectroscopy has been propo…
View article: Experimental fossilisation of two strains of methanogen, <i>Methanoculleus bourgensis </i>MAB-2 and <i>Methanobacterium oryzae</i> in silicates, carbonates, and phosphates
Experimental fossilisation of two strains of methanogen, <i>Methanoculleus bourgensis </i>MAB-2 and <i>Methanobacterium oryzae</i> in silicates, carbonates, and phosphates Open
Mineralization has long been considered a prime mechanism for fossilising organisms at cellular level with a high degree of precision.Rapid entombment of microbes in minerals is often essential for their long-term preservation since it red…
View article: Exceptionally preserved beetles in a Triassic coprolite of putative dinosauriform origin
Exceptionally preserved beetles in a Triassic coprolite of putative dinosauriform origin Open
The Triassic was a crucial period for the early evolution and diversification of insects, including Coleoptera1-3-the most diverse order of organisms on Earth. The study of Triassic beetles, however, relies almost exclusively on…
View article: Exceptionally preserved beetles in a Triassic coprolite of putative dinosauriform origin
Exceptionally preserved beetles in a Triassic coprolite of putative dinosauriform origin Open
This dataset contains the digitized treatments in Plazi based on the original journal article Qvarnström, Martin, Fikáček, Martin, Vikberg Wernström, Joel, Huld, Sigrid, Beutel, Rolf G., Arriaga-Varela, Emmanuel, Ahlberg, Per E., Niedźwied…
View article: Manganese-mineralized chemical gardens: an abiotic approach to the search for life on Earth and other planets
Manganese-mineralized chemical gardens: an abiotic approach to the search for life on Earth and other planets Open
Manganese-mineralized chemical gardens: an abiotic approach to the search for life on Earth and other planets