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A fossilized marble run: the peculiar taphonomy of Ordovician diploporitan blastozoans from Sweden


Klug, Christian; Pohle, Alexander; Kiel, Steffen; Kröger, Björn (2018). A fossilized marble run: the peculiar taphonomy of Ordovician diploporitan blastozoans from Sweden. Swiss Journal of Palaeontology, 137(2):405-411.

Abstract

Diploporitans had subspherical thecae, which usually were attached to hard substrates either directly with an attachment disc at the base of their theca or with a stem and holdfast. After the death of the animal, isolated thecae were easily transported by currents over more or less consolidated sediment. We describe a case where 13 diploporitan thecae were trapped in the remains of a cephalopod with an orthoconic conch. Most of the thecae show a perfect fit and are size-sorted within the conch or siphuncle. We discuss the taphonomic processes that might have been involved in this rare kind of alignment and sorting.

Abstract

Diploporitans had subspherical thecae, which usually were attached to hard substrates either directly with an attachment disc at the base of their theca or with a stem and holdfast. After the death of the animal, isolated thecae were easily transported by currents over more or less consolidated sediment. We describe a case where 13 diploporitan thecae were trapped in the remains of a cephalopod with an orthoconic conch. Most of the thecae show a perfect fit and are size-sorted within the conch or siphuncle. We discuss the taphonomic processes that might have been involved in this rare kind of alignment and sorting.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Uncontrolled Keywords:Palaeontology
Language:English
Date:1 December 2018
Deposited On:01 Mar 2019 09:15
Last Modified:25 Sep 2019 00:25
Publisher:Springer
ISSN:1664-2376
OA Status:Closed
Publisher DOI:https://doi.org/10.1007/s13358-018-0173-x
Project Information:
  • : FunderSNSF
  • : Grant ID200020_132870
  • : Project TitleVariability, Macroecology, Morphogenesis and Evolution of early Ammonoidea

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