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A new lowermost middle Cambrian (Series 3, Stage 5) faunule from Saxony (Germany) and its bearing on the tectonostratigraphic history of the Saxothuringian domain
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2014 (English)In: Palaeontologische Zeitschrift, ISSN 0031-0220, E-ISSN 1867-6812, Vol. 88, no 3, 239-262 p.Article in journal (Refereed) Published
Abstract [en]

The core of borehole 1209/78 west of Doberlug-Kirchhain and south of Herzberg in the Torgau-Doberlug Syncline records an atypical lower part of the Trobitz Formation with thin limestone horizons. These limestone layers include the remains of a low to moderately diverse fauna with the trilobites Protolenus (Hupeolenus) bergstroemi n. sp., Cambrunicornia saxonica n. sp., Ornamentaspis? aff. todraensis Geyer 1990a, Calodiscus? n. sp., the remains of two undetermined olenelloid? and paradoxidid? species, at least two brachiopods (Trematobolus, undetermined acrotretoid), and one hyolith. The fauna clearly suggests a position in the lower Agdzian stage of the West Gondwana chronostratigraphic scheme and correlation with the lowermost to lower Middle Cambrian strata in regions such as the Moroccan Atlas ranges and northern Spain, so the assemblages represent the oldest Middle Cambrian fauna known from the Saxothuringian domain and reconfirm the palaeogeographic position in the Perigondwanan segment. The lithological differences of the fossiliferous cores from those of the typical Trobitz Formation and the recorded high-energy conditions indicate high-frequency sea-level changes suggesting that this part of the succession may be a late stage of the subglobally recognizable eustatic sea-level fluctuations at the traditional Lower-Middle Cambrian boundary interval.

Place, publisher, year, edition, pages
2014. Vol. 88, no 3, 239-262 p.
Keyword [en]
Cambrian, Trilobita, Brachiopoda, Biostratigraphy, Sea-level fluctuations, Saxo-Thuringian Zone, Germany
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-233004DOI: 10.1007/s12542-013-0195-zISI: 000341172800001OAI: oai:DiVA.org:uu-233004DiVA: diva2:754549
Available from: 2014-10-10 Created: 2014-09-29 Last updated: 2014-10-10Bibliographically approved

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