Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Axel Munneck"'
Publikováno v:
Frontiers in Earth Science, Vol 6 (2018)
Although carbonate-precipitating cyanobacteria are ubiquitous in aquatic ecosystems today, the criteria used to identify them in the geological record are subjective and rarely testable. Differences in the mode of biomineralization between cyanobacte
Externí odkaz:
https://doaj.org/article/342275a6cebd4a87a650d0eae9595e78
Publikováno v:
Estonian Journal of Earth Sciences, Vol 64, Iss 1, Pp 24-30 (2015)
The Mulde Event (Homerian, Wenlock) of the Silurian is characterized by a positive δ13C isotope excursion, a stepwise extinction of the hemipelagic fauna and an increase in non-skeletal deposits thought to be microbial, proliferating in shallow mari
Externí odkaz:
https://doaj.org/article/c8c0a431906f46469b7aaf1a4cd37834
Publikováno v:
Estonian Journal of Earth Sciences, Vol 63, Iss 4, Pp 287-292 (2014)
A microbial origin has been proposed for matrix-supported, low-diversity buildups reported from different palaeocontinents during the onset of the Mulde positive carbon isotope excursion. We have investigated a small aphanitic buildup from the Lower
Externí odkaz:
https://doaj.org/article/2fe42cf05c044ed9ad625ed654f2d4d4
Publikováno v:
Estonian Journal of Earth Sciences, Vol 63, Iss 3, Pp 181-185 (2014)
A new cornulitid species, Conchicolites crispisulcans sp. nov., is described from the Wenlock of Gotland, Sweden. The undulating edge of C. crispisulcans sp. nov. peristomes is unique among the species of Conchicolites. This undulating peristome edge
Externí odkaz:
https://doaj.org/article/02a286fee0024efa951e1fc9e352fb37
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 139-0 (2023)
Understanding ancient climate changes is hampered by the inability to disentangle trends in continental ice volume from records of relative sea-level change. As a unique coastal deposit in tropical and subtropical regions, beachrock has been proved t
Externí odkaz:
https://doaj.org/article/faadc277489e48b39c84a6706e42d36f
Autor:
Alexander Nützel, Jan Ove Ebbestad, Barbara Seuss, Axel Munnecke, Royal H. Mapes, Alex G. Cook
Publikováno v:
Zitteliana, Vol 97, Iss , Pp 29-51 (2023)
The platycerate gastropods Orthonychia yutaroi Ebbestad, sp. nov. (Ordovician, Boda Limestone, Sweden), O. enorme (Silurian, Sweden, Gotland), O. parva (Pennsylvanian, Finis Shale Member, USA), and Orthonychia sp. (Mississippian, Imo Formation, USA)
Externí odkaz:
https://doaj.org/article/7970a5a27ff94a21a5fa192158a9588c