Publications of Christian Hallmann

Bobrovskiy, I.; Hope, J. M.; Nettersheim, B. J.; Volkman, J. K.; Hallmann, C.; Brocks, J. J.: Algal origin of sponge sterane biomarkers negates the oldest evidence for animals in the rock record. Nature Ecology & Evolution 5, pp. 165 - 168 (2021)

Dummann, W.; Steinig, S.; Hofmann, P.; Lenz, M.; Kusch, S.; Flögel, S.; Herrle, J. O.; Hallmann, C.; Rethemeyer, J.; Kasper, H. U. et al.; Wagner, T.: Driving mechanisms of organic carbon burial in the Early Cretaceous South Atlantic Cape Basin (DSDP Site 361). Climate of the Past 17 (1), pp. 469 - 490 (2021)

Schmidt, C.; Nikeleit, V.; Schaedler, F.; Leider, A.; Lueder, U.; Bryce, C.; Hallmann, C.; Kappler, A.: Metabolic responses of a phototrophic co-culture enriched from a freshwater sediment on changing substrate availability and its relevance for biogeochemical iron cycling. Geomicrobiology Journal 38 (3), pp. 267 - 281 (2021)

van Maldegem, L.; Nettersheim, B. J.; Leider, A.; Brocks, J. J.; Adam, P.; Schaeffer, P.; Hallmann, C.: Geological alteration of Precambrian steroids mimics early animal signatures. Nature Ecology & Evolution 5, pp. 169 - 173 (2021)

French, K. L.; Leider, A.; Hallmann, C.: Comparability and reproducibility of biomarker ratio values measured by GC-QQQ-MS. Organic Geochemistry 150, 104124 (2020)

Wagner, S.; Schubotz, F.; Kaiser, K.; Hallmann, C.; Waska, H.; Rossel, P. E.; Hansman, R.; Elvert, M.; Middelburg, J. J.; Engel, A. et al.; Blattmann, T. M.; Catalá, T. S.; Lennartz, S. T.; Gomez-Saez, G. V.; Pantoja-Gutiérrez, S.; Bao, R.; Galy, V.: Soothsaying DOM: A current perspective on the future of oceanic dissolved organic carbon. Frontiers in Marine Science 7, 341 (2020)

Hallmann, C.; Nettersheim, B. J.; Brocks, J. J.; Schwelm, A.; Hope, J. M.; Not, F.; Lomas, M.; Schmidt, C.; Schiebel, R.; Nowack, E. C. M. et al.; De Deckker, P.; Pawlowski, J.; Bowser, S. S.; Bobrovskiy, I.; Zonneveld, K.; Kucera, M.; Stuhr, M.: Reply to: Sources of C₃₀ steroid biomarkers in Neoproterozoic–Cambrian rocks and oils. Nature Ecology & Evolution 4, pp. 37 - 39 (2020)

Luo, G.; Yang, H.; Algeo, T. J.; Hallmann, C.; Xie, S.: Lipid biomarkers for the reconstruction of deep-time environmental conditions. Earth-Science Reviews 189, pp. 99 - 124 (2019)

Nettersheim, B. J.; Brocks, J. J.; Schwelm, A.; Hope, J. M.; Not, F.; Lomas, M.; Schmidt, C.; Schiebel, R.; Nowack, E. C. M.; Deckker, P. D. et al.; Pawlowski, J.; Bowser, S. S.; Bobrovskiy, I.; Zonneveld, K.; Kucera, M.; Stuhr, M.; Hallmann, C.: Putative sponge biomarkers in unicellular Rhizaria question an early rise of animals. Nature Ecology & Evolution 3 (4), pp. 577 - 581 (2019)

Illing, C. J.; Hallmann, C.; Scott, A. C.; Collinson, M. E.; Briggs, D. E. G.; Strauss, H.; Summons, R. E.: Heterogeneity of free and occluded bitumen in a natural maturity sequence from Oligocene Lake Enspel. Geochimica et Cosmochimica Acta 245, pp. 240 - 265 (2019)

Leider, A.; Richter-Brockmann, S.; Nettersheim, B. J.; Achten, C.; Hallmann, C.: Low-femtogram sensitivity analysis of polyaromatic hydrocarbons using GC-APLI-TOF mass spectrometry: Extending the target window for aromatic steroids in early Proterozoic rocks. Organic Geochemistry 129, pp. 77 - 87 (2019)

van Maldegem, L.; Sansjofre, P.; Weijers, J. W. H.; Wolkenstein, K.; Strother, P. K.; Wörmer, L.; Hefter, J.; Nettersheim, B. J.; Hoshino, Y.; Schouten, S. et al.; Damsté, J. S. S.; Nath, N.; Griesinger; Kuznetsov, N. B.; Elie, M.; Elvert, M.; Tegelaar, E.; Gleixner, G.; Hallmann, C.: Bisnorgammacerane traces predatory pressure and the persistent rise of algal ecosystems after Snowball Earth. Nature Communications 10 (1), 476 (2019)

Peters, C. A.; Hallmann, C.; George, S. C.: Phenolic compounds in oil-bearing fluid inclusions: Implications for water-washing and oil migration. Organic Geochemistry 118, pp. 36 - 46 (2018)

Bobrovskiy, I.; Hope, J. M.; Ivantsov, A.; Nettersheim, B. J.; Hallmann, C.; Brocks, J. J.: Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals. Science 361 (6408), pp. 1246 - 1249 (2018)

Muller, É.; Thomazo, C.; Stüeken, E. E.; Hallmann, C.; Leider, A.; Chaduteau, C.; Buick, R.; Baton, F.; Philippot, P.; Ader, M.: Bias in carbon concentration and delta¹³C measurements of organic matter due to cleaning treatments with organic solvents. Chemical Geology 493, pp. 405 - 412 (2018)

Hoshino, Y.; Poshibaeva, A.; Meredith, W.; Snape, C.; Poshibaev, V.; Versteegh, G. J. M.; Kuznetsov, N.; Leider, A.; van Maldegem, L.; Neumann, M. et al.; Naeher, S.; Moczydłowska, M.; Brocks, J. J.; Jarrett, A. J. M.; Tang, Q.; Xiao, S.; McKirdy, D.; Das, S. K.; Alvaro, J. J.; Sansjofre, P.; Hallmann, C.: Cryogenian evolution of stigmasteroid biosynthesis. Science Advances 3 (9), e1700887 (2017)

Brocks, J. J.; Jarrett, A. J. M.; Sirantoine, E.; Hallmann, C.; Hoshino, Y.; Liyanage, T.: The rise of algae in Cryogenian oceans and the emergence of animals. Nature 548, pp. 578 - 581 (2017)

Williford, K. H.; Ushikubo, T.; Lepot, K.; Kitajima, K.; Hallmann, C.; Spicuzza, M. J.; Kozdon, R.; Eigenbrode, J. L.; Summons, R. E.; Valley, J. W.: Carbon and sulfur isotopic signatures of ancient life and environment at the microbial scale: Neoarchean shales and carbonates. Geobiology 14 (2), pp. 105 - 128 (2016)

Ferralis, N.; Matys, E. D.; Knoll, A. H.; Hallmann, C.; Summons, R. E.: Rapid, direct and non-destructive assessment of fossil organic matter via microRaman spectroscopy. Carbon 108, pp. 440 - 449 (2016)

Leider, A.; Schumacher, T. C.; Hallmann, C.: Enhanced procedural blank control for organic geochemical studies of critical sample material. Geobiology 14 (5), pp. 469 - 482 (2016)