Becker, R. Thomas, Hartenfels, Sven and Kaiser, Sandra I. (2021). Review of Devonian-Carboniferous Boundary sections in the Rhenish Slate Mountains (Germany). Palaeobiodiversity Palaeoenvironments, 101 (2). S. 357 - 421. HEIDELBERG: SPRINGER HEIDELBERG. ISSN 1867-1608

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Thirty Devonian-Carboniferous Boundary sections of the Rhenish Slate Mountains and adjacent subsurface areas are reviewed with respect to litho-, event, conodont, ammonoid, sequence, and chemostratigraphy. In the interval from the base of the uppermost Fatnennian (Wocklum Beds, Wocklumian) to the base of the middle Toumaisian (base Lower Alum Shale), 11 conodont and 16 ammonoid (sub)zones are distinguished. The terminology of the Hangenberg Crisis Interval is refined, with an overall regressive Crisis Prelude below the main Hangenberg Extinction, which defines the base of the transgressive Lower Crisis Interval (Hangenberg Black Shale). The glacigenic and regressive Middle Crisis Interval (Hangenberg Shale/Sandstone) is followed by the overall transgressive Upper Crisis Interval that can be subdivided into three parts (I to III) with the help of conodont stratigraphy (upper costatus-kockeli Interregnum = upper ckl, Protognathodus kockeli Zone, and lower part of Siphonodella (Eosiphonodella) sulcata s.1.1Pr. kuehni Zone). Protognathodus kockeli includes currently a wide range of forms, which variabilities and precise ranges need to be established before a precise GSSP level should be selected. Returning to its original definition, the former Upper duplicata Zone is re-named as Siphonodella (S.) mehli Zone. It replaces the S. (S.)jii Zone, which is hampered by taxonomic complications. The S. (S.) quadruplicata Zone of Ji (1985) is hardly supported by Rhenish data. The entry of typical S. (S.) lobata (M1) characterises an upper subdivision (subzone) of the S. (S.) sandbergi Zone; the new S. (S.) lobata M2 enters much earlier within the S. (S.) mehli Zone. The ammonoid-defined base of the Wocklum-Stufe (Upper Devonian = UD VI) begins with the Linguaclymenia similis Zone (UD VI-A(1)). The oldest S. (Eosiphonodella) enter within the Muessenbiaergia bisulcata Zone (UD VI-A(2)). The traditional Parawocklumeria paradoxa Zone of Schindewolf (1937) is divided into successive P. paprothae (VI-C-1), P. paradoxa (VI-C-2). and Mayneoceras nucleus (VI-C-3) Subzones. In the lower Toumaisian (Lower Carboniferous = LC I), the Gattendorfia subinvoluta Zone is subdivided into G. subinvoluta (LC I-A(2)) and Eocanites nodosus (LC I-A(3)) Subzones. The Paprothites dorsoplanus Zone (LC I-B) can be divided into Pap. dorsoplanus (LC I-B-1) and Paragattendorfia sphaeroides (LC I-B-2) Subzones. Potential subdivisions of the Pseudarietites westfalicus (LC I-C) and Parag. patens Zones (LC I-D) are less distinctive. The unfossiliferous or argillaceous upper part of the Hangenberg Limestone and the overlying Lower Alum Shale Event Interval remain regionally unzoned for ammonoids.

Item Type: Journal Article
CreatorsEmailORCIDORCID Put Code
URN: urn:nbn:de:hbz:38-577304
DOI: 10.1007/s12549-020-00469-6
Journal or Publication Title: Palaeobiodiversity Palaeoenvironments
Volume: 101
Number: 2
Page Range: S. 357 - 421
Date: 2021
Place of Publication: HEIDELBERG
ISSN: 1867-1608
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
Biodiversity Conservation; PaleontologyMultiple languages


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