Reitner, Joachim

[["dc.bibliographiccitation.firstpage","133"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Geosciences"],["dc.bibliographiccitation.volume","12"],["dc.contributor.affiliation","Pei, Yu; 1Geoscience Center, Department of Geobiology, Georg-August-Universität Göttingen, 37077 Göttingen, Germany; jreitne@gwdg.de"],["dc.contributor.affiliation","Hagdorn, Hans; 2Muschelkalkmuseum, 74653 Ingelfingen, Germany; encrinus@hagdorn-ingelfingen.de"],["dc.contributor.affiliation","Voigt, Thomas; 3Institute of Geosciences, Friedrich-Schiller-Universität Jena, 07749 Jena, Germany; thomas.voigt@uni-jena.de"],["dc.contributor.affiliation","Duda, Jan-Peter; 4Sedimentology & Organic Geochemistry Group, Department of Geosciences, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany; jan-peter.duda@geo.uni-tuebingen.de"],["dc.contributor.affiliation","Reitner, Joachim; 1Geoscience Center, Department of Geobiology, Georg-August-Universität Göttingen, 37077 Göttingen, Germany; jreitne@gwdg.de"],["dc.contributor.author","Pei, Yu"],["dc.contributor.author","Hagdorn, Hans"],["dc.contributor.author","Voigt, Thomas"],["dc.contributor.author","Duda, Jan-Peter"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2022-04-09T14:17:36Z"],["dc.date.accessioned","2022-12-19T08:05:35Z"],["dc.date.available","2022-04-09T14:17:36Z"],["dc.date.available","2022-12-19T08:05:35Z"],["dc.date.issued","2022"],["dc.date.updated","2022-04-08T07:14:32Z"],["dc.description.abstract","Following the end-Permian crisis, microbialites were ubiquitous worldwide. For instance, Triassic deposits in the Germanic Basin provide a rich record of stromatolites as well as of microbe-metazoan build-ups with nonspicular demosponges. Despite their palaeoecological significance, however, all of these microbialites have only rarely been studied. This study aims to fill this gap by examining and comparing microbialites from the Upper Buntsandstein (Olenekian, Lower Triassic) and the lower Middle Muschelkalk (Anisian, Middle Triassic) in Germany. By combining analytical petrography (optical microscopy, micro X-ray fluorescence, and Raman spectroscopy) and geochemistry (δ13Ccarb, δ18Ocarb), we show that all the studied microbialites formed in slightly evaporitic environments. Olenekian deposits in the Jena area and Anisian strata at Werbach contain stromatolites. Anisian successions at Hardheim, in contrast, host microbe-metazoan build-ups. Thus, the key difference is the absence or presence of nonspicular demosponges in microbialites. It is plausible that microbes and nonspicular demosponges had a mutualistic relationship, and it is tempting to speculate that the investigated microbial-metazoan build-ups reflect an ancient evolutionary and ecological association. The widespread occurrence of microbialites (e.g., stromatolites/microbe-metazoan build-ups) after the catastrophe may have resulted from suppressed ecological competition and the presence of vacant ecological niches. The distribution of stromatolites and/or microbe-metazoan build-ups might have been controlled by subtle differences in salinity and water depth, the latter influencing hydrodynamic processes and nutrient supply down to the microscale. To obtain a more complete picture of the distribution of such build-ups in the earth’s history, more fossil records need to be (re)investigated. For the time being, environmental and taphonomic studies of modern nonspicular demosponges are urgently required."],["dc.identifier.doi","10.3390/geosciences12030133"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/106495"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/118874"],["dc.identifier.url","https://publications.goettingen-research-online.de/handle/2/106495"],["dc.language.iso","en"],["dc.relation.eissn","2076-3263"],["dc.relation.issn","2076-3263"],["dc.rights","Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)."],["dc.title","Palaeoecological Implications of Lower-Middle Triassic Stromatolites and Microbe-Metazoan Build-Ups in the Germanic Basin: Insights into the Aftermath of the Permian–Triassic Crisis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"],["local.message.claim","2022-12-13T11:35:47.010+0000|||rp115174|||submit_approve|||dc_contributor_author|||None"]]

[["dc.bibliographiccitation.firstpage","1348"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Life"],["dc.bibliographiccitation.volume","12"],["dc.contributor.affiliation","Luo, Cui; 1State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, China"],["dc.contributor.affiliation","Pei, Yu; 2Department of Geosciences, University of Tübingen, 72076 Tübingen, Germany"],["dc.contributor.affiliation","Richoz, Sylvain; 3Department of Geology, Lund University, Sölvegatan 12, 223 62 Lund, Sweden"],["dc.contributor.affiliation","Li, Qijian; 1State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, China"],["dc.contributor.affiliation","Reitner, Joachim; 4Department of Geobiology, Centre of Geosciences, University of Göttingen, Goldschmidtstraße 3, 37073 Göttingen, Germany"],["dc.contributor.author","Luo, Cui"],["dc.contributor.author","Pei, Yu"],["dc.contributor.author","Richoz, Sylvain"],["dc.contributor.author","Li, Qijian"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.editor","Bianucci, Giovanni"],["dc.date.accessioned","2022-10-04T10:21:05Z"],["dc.date.available","2022-10-04T10:21:05Z"],["dc.date.issued","2022"],["dc.date.updated","2022-11-11T13:14:41Z"],["dc.description.abstract","Structures similar to fossilized nonspicular demosponges have been reported in carbonates throughout the Phanerozoic and recently in rocks dating back to 890 Ma ago. Interpretation of these records is increasingly influential to our understanding of metazoans in multiple aspects, including their early evolution, the ecology in fossil reefs, and recovery after mass extinction events. Here, we propose six identification criteria of “Keratosa”-type nonspicular demosponge fossils based on the well-established taphonomical models and their biological characteristics. Besides, sponge fossils of this kind from the lowermost Triassic of Chanakhchi (Armenia) are described with a 3-D reconstruction to exemplify the application of these criteria in recognition of such organisms. Subsequently, the state-of-the-art understanding of the taxonomy and evolution of these fossil sponges, a previously poorly addressed topic, is summarized. The morphology of the Triassic Chanakhchi fossils indicates an affinity with verongimorphs, a group that may have evolved by Cambrian Age 3. Other than that, further efforts are encouraged to forge quantitative criteria based on the here proposed descriptive version and to explore the taxonomic diversity and evolutionary details of these fossil nonspicular demosponges."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.3390/life12091348"],["dc.identifier.pii","life12091348"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/114326"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-600"],["dc.publisher","MDPI"],["dc.relation.eissn","2075-1729"],["dc.rights","CC BY 4.0"],["dc.title","Identification and Current Palaeobiological Understanding of “Keratosa”-Type Nonspicular Demosponge Fossils in Carbonates: With a New Example from the Lowermost Triassic, Armenia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]