NDLI: Taphonomy of neopterygian fishes from the Upper Kimmeridgian Wattendorf Plattenkalk of Southern Germany

Content Provider	Springer Nature Link
Author	Chellouche, Patrick Fürsich, Franz T. Mäuser, Matthias
Copyright Year	2012
Abstract	The Upper Kimmeridgian Wattendorf Plattenkalk, the oldest of the Solnhofen-type plattenkalks of southern Germany, has yielded a high number of exceptionally preserved fossils over the past several years. The high number of fossils and the fact that every bedding plane, along which the laminated rocks split, has been equally thoroughly searched for fossils, allow for qualitative as well as quantitative taphonomic investigations. For a quantitative analysis of the Wattendorf lagerstätte, four different taphofacies (A–D) were established by means of euclidean cluster analysis. For this, biostratinomic features of neopterygian fishes, primarily of the genus Tharsis, were recorded. Percentages of the occurrence of these features per layer were determined and clustered into groups of similar patterns. The taphonomic features utilised were bending of the spinal column, completeness, and skeletal articulation. Taphofacies A through D mark a change from a palaeoenvironment with only small extrinsic disturbing factors to a palaeoenvironment characterised by greater disturbance (e.g. bottom currents, fluctuating salinity). At the beginning of plattenkalk deposition, cyclic changes of the palaeoenvironment prevailed with periodic high disturbance, probably caused by storm-induced flows. These events initiated mixing of the supposedly chemically stratified water body. In the upper part of the plattenkalk unit, taphofacies indicative of higher disturbance dominate, suggesting a change from stable to less stable environmental conditions in the plattenkalk basin resulting in disruption of the typical plattenkalk sedimentation. Sporadic oxygenation of bottom waters is also indicated by the style of soft-tissue preservation. Besides typical phosphatisation, a specimen of Palaeohirudo? sp. shows soft-tissue preservation through iron-oxide permineralisation.
Starting Page	99
Ending Page	117
Page Count	19
File Format	PDF
ISSN	18671594
Journal	Palaeobiodiversity and Palaeoenvironments
Volume Number	92
Issue Number	1
e-ISSN	18671608
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-02-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Taphofacies Soft-tissue preservation Plattenkalk Kimmeridgian Actinopterygii Wattendorf Biodiversity Paleontology Plant Systematics/Taxonomy/Biogeography Animal Systematics/Taxonomy/Biogeography Freshwater & Marine Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology Geology Ecology, Evolution, Behavior and Systematics Global and Planetary Change Paleontology

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