title: Augmented laminography, a correlative 3D imaging method for revealing the inner structure of compressed fossils.
abstract: Non-destructive imaging techniques can be extremely useful tools for the investigation and the assessment of palaeontological objects, as mechanical preparation of rare and valuable fossils is precluded in most cases. However, palaeontologists are often faced with the problem of choosing a method among a wide range of available techniques. In this case study, we employ x-ray computed tomography (CT) and computed laminography (CL) to study the first fossil xiphosuran from the Muschelkalk (Middle Triassic) of the Netherlands. The fossil is embedded in micritic limestone, with the taxonomically important dorsal shield invisible, and only the outline of its ventral part traceable. We demonstrate the complementarity of CT and CL which offers an excellent option to visualize characteristic diagnostic features. We introduce augmented laminography to correlate complementary information of the two methods in Fourier space, allowing to combine their advantages and finally providing increased anatomical information about the fossil. This method of augmented laminography enabled us to identify the xiphosuran as a representative of the genus Limulitella.
authors.affiliation: Karlsruhe Institute of Technology (KIT), Institute for Photon Science and Synchrotron Radiation (IPS) &Institute for Beam Physics and Technology (IBPT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.|Karlsruhe Institute of Technology (KIT), Laboratory for Applications of Synchrotron Radiation (LAS), Kaiserstr. 12, 76131 Karlsruhe, Germany.
authors.forename: Marcus
authors.initials: M
authors.lastname: Zuber
authors.affiliation: University of Duisburg-Essen, Department of General Zoology, Faculty of Biology, Universitätsstr. 5, 45117 Essen, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Laaß
authors.affiliation: Karlsruhe Institute of Technology (KIT), Institute for Photon Science and Synchrotron Radiation (IPS) &Institute for Beam Physics and Technology (IBPT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
authors.forename: Elias
authors.initials: E
authors.lastname: Hamann
authors.affiliation: Martin-Luther-University Halle-Wittenberg, Institute of Geosciences and Geography, Von-Seckendorff-Platz 3, 06120 Halle (Saale), Germany.
authors.forename: Sophie
authors.initials: S
authors.lastname: Kretschmer
authors.affiliation: Martin-Luther-University Halle-Wittenberg, Institute of Geosciences and Geography, Von-Seckendorff-Platz 3, 06120 Halle (Saale), Germany.
authors.forename: Norbert
authors.initials: N
authors.lastname: Hauschke
authors.affiliation: Karlsruhe Institute of Technology (KIT), Institute for Photon Science and Synchrotron Radiation (IPS) &Institute for Beam Physics and Technology (IBPT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.|Karlsruhe Institute of Technology (KIT), Laboratory for Applications of Synchrotron Radiation (LAS), Kaiserstr. 12, 76131 Karlsruhe, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: van de Kamp
authors.affiliation: Karlsruhe Institute of Technology (KIT), Institute for Photon Science and Synchrotron Radiation (IPS) &Institute for Beam Physics and Technology (IBPT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.|Karlsruhe Institute of Technology (KIT), Laboratory for Applications of Synchrotron Radiation (LAS), Kaiserstr. 12, 76131 Karlsruhe, Germany.
authors.forename: Tilo
authors.initials: T
authors.lastname: Baumbach
authors.affiliation: Karlsruhe Institute of Technology (KIT), Institute for Photon Science and Synchrotron Radiation (IPS) &Institute for Beam Physics and Technology (IBPT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.|Ziehm Imaging GmbH, Donaustr. 31, 90451 Nuremberg, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Koenig
mesh_terms: D000818:Animals; D005580:Fossils / Q000033:anatomy & histology*; D006737:Horseshoe Crabs / Q000033:anatomy & histology; D021621:Imaging, Three-Dimensional / Q000379:methods*; D009426:Netherlands; D010163:Paleontology; D014057:Tomography, X-Ray Computed