Taphonomic patterns mimic biologic structures: diagenetic Liesegang rings in Mesozoic coleoids and coprolites.
| Autor: | Klug C; Paläontologisches Institut und Museum, Universität Zürich, Zürich, Switzerland., Di Silvestro G; Trilobite Design Italia, Aurisina (TS), Italy., Hoffmann R; Institute of Geology, Mineralogy & Geophysics, Ruhr-Universität Bochum, Bochum, Germany., Schweigert G; Staatliches Museum für Naturkunde, Stuttgart, Germany., Fuchs D; Bayerische Staatssammlung für Paläontologie und Geologie, München, Germany., Clements T; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK., Gueriau P; Institute of Earth Sciences (ISTE), University of Lausanne, Lausanne, Switzerland. |
|---|---|
| Jazyk: | angličtina |
| Zdroj: | PeerJ [PeerJ] 2021 Jan 14; Vol. 9, pp. e10703. Date of Electronic Publication: 2021 Jan 14 (Print Publication: 2021). |
| DOI: | 10.7717/peerj.10703 |
| Abstrakt: | Because of physiology of coleoids, their fossils preserve soft-tissue-remains more often than other cephalopods. Sometimes, the phosphatized soft-tissues, particularly parts of the muscular mantle, display dark circular patterns. Here, we showcase that these patterns, here documented for fossil coleoids from the Jurassic of Germany and the Cretaceous of Lebanon, superficially resemble chromatophores (which enable living coleoids to alter their coloration). We examined and chemically analyzed the circular structures in these specimens, describe them, and discuss their genesis. Based on their structure and color, we visually differentiate between three types of circles. By comparison with similar structures, we suggest that these structures are not biogenic but Liesegang rings, which formed due to reaction-diffusion processes very soon after death. Competing Interests: Gianpaolo Di Silvestro is employed by Trilobite Design Italia. (© 2021 Klug et al.) |
| Databáze: | MEDLINE |
| Externí odkaz: |
|