Articles | Volume 42, issue 2
https://doi.org/10.5194/jm-42-193-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-42-193-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Anagenetic evolution and peramorphosis of a latest Devonian conodont from Holy Cross Mountain (Poland)
Przemysław Świś
CORRESPONDING AUTHOR
Institute of Evolutionary Biology, Faculty of Biology, Biological and Chemical Research Centre (CNBCh UW), University of Warsaw, 02-089 Żwirki i Wigury 101, Warsaw, Poland
Related subject area
Palaeobiology and evolution
Artifacts resembling Ediacaran or Cambrian fossils: how to identify them and avoid their generation
Thiago F. Toniolo, Juliana M. Leme, Dermeval A. Carmo, Thomas R. Fairchild, Luana Morais, and Ricardo I. F. Trindade
J. Micropalaeontol., 42, 83–93, https://doi.org/10.5194/jm-42-83-2023, https://doi.org/10.5194/jm-42-83-2023, 2023
Short summary
Short summary
The early fossils of animals with an exoskeleton witness a key episode in the evolution of life. These fossils, such as the cloudinids, have tubular shapes and an uncertain affinity. The reaction between H2O2 and pyrite can lead to the generation of objects very similar to these fossils. For this reason, the method of rock preparation is a cause for concern. Besides discussing methodology, this work provides criteria to distinguish artifacts from fossils based on their composition and structure.
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Short summary
Pseudopolygnathus marburgensis marburgensis and Pseudopolygnathus marburgensis trigonicus were believed to be different conodont subspecies. However, paleontological data indicate those two are stages of evolution of a single lineage. Research is also focused on evolutionary changing of appearance and evolution of growth and development calibrated precisely with incremental layers. This study could have potential influence on dating Late Devonian rocks based on evolutionary transformations.
Pseudopolygnathus marburgensis marburgensis and Pseudopolygnathus marburgensis trigonicus were...