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Related Experiment Video

Updated: Apr 29, 2026

Microfocus X-ray CT microCT Imaging of Actinia equina Cnidaria, Harmothoe sp. Annelida, and Xenoturbella japonica Xenacoelomorpha
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Computed 3D visualisation of an extinct cephalopod using computer tomographs.

Alexander Lukeneder1

  • 1Natural History Museum Vienna, Geological-Palaeontological Department, Burgring 7, A-1010 Vienna, Austria.

Computers & Geosciences
|May 23, 2014
PubMed
Summary

This study presents the first 3D visualization of the heteromorph ammonoid Dissimilites, revealing its morphology and locomotion. These advanced 3D models offer new insights into extinct cephalopod life and paleontology.

Keywords:
3D visualisationCephalopodsComputer tomographyCretaceousPalaeontology

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Area of Science:

  • Paleontology
  • Earth Sciences
  • 3D Visualization

Background:

  • Heteromorph ammonoids, like Dissimilites, are extinct marine cephalopods.
  • Understanding their morphology and locomotion is crucial for reconstructing ancient marine ecosystems.

Purpose of the Study:

  • To create the first 3D visualization of a heteromorph cephalopod species, Dissimilites, from the Southern Alps.
  • To reconstruct the life, shape, mode of life, and habitat of Dissimilites.
  • To analyze morphological changes during ontogeny and infer locomotion patterns.

Main Methods:

  • Computed tomography (CT) scanning of fossil material.
  • 3D reconstruction and modeling using specialized software.
  • Creation of animated movie for life reconstruction and locomotion analysis.

Main Results:

  • A detailed 3D life reconstruction of Dissimilites based on the most complete shell known.
  • Insights into morphological details and ontogenetic changes.
  • Interpretation of Dissimilites as an active swimmer in the Tethyan Ocean.

Conclusions:

  • Non-destructive 3D visualization methods, like CT scanning, are powerful tools in paleontology.
  • 3D models and animations enhance understanding of extinct cephalopod morphology and locomotion.
  • These digital tools facilitate online collaboration and data sharing among paleontologists.