Tomographic techniques for the study of exceptionally preserved fossils

Area of Science:

• Palaeontology
• Imaging Technology

Background:

• Three-dimensional fossils, particularly those with soft-part anatomy, are crucial for understanding ancient life.
• Studying these complex fossils presents significant challenges due to their intricate structures.

Purpose of the Study:

• To explore advanced imaging techniques for the non-destructive analysis of three-dimensional fossils.
• To highlight the utility of X-ray computed tomography (CT) in palaeontological research.

Main Methods:

• Serial sectioning via physical grinding or sawing with photography.
• Optical techniques for serial focusing.
• Advanced scanning technologies including neutron tomography, magnetic resonance imaging, and X-ray computed tomography (CT).
• Utilizing synchrotron X-ray sources and phase-contrast imaging for enhanced data quality.

Main Results:

• X-ray computed tomography (CT) offers versatile, high-resolution imaging of fossil interiors and exteriors across various scales.
• Synchrotron X-ray CT with phase-contrast enhancement significantly improves data quality and contrast.
• Isosurface-based rendering enables the creation of interactive 'virtual fossils' for detailed study.

Conclusions:

• Tomographic imaging, especially X-ray CT, revolutionizes the study of three-dimensional fossils.
• Virtual fossil reconstruction allows for unprecedented interactive manipulation and dissection, advancing palaeontological research.