Use of CT scanning and radiography as legal expert evidence in Paleontology (Trilobites of Morocco)
Corbacho, Joan (Museu Geològic del Seminari de Barcelona)
Morrison, Scott (University of Oregon. Department of Geological Sciences (USA))
Llácer, Sergio (Institut Català de Paleontologia Miquel Crusafont)
Hammond, Keith (Museu Geològic del Seminari de Barcelona)

Date:	2019
Abstract:	This study presents CT Scanning and radiography techniques applied to invertebrate paleontology, specifically to the detection of trilobites forgeries in Morocco. A well-known technique uses ultraviolet rays to detect falsified resin elements in trilobites. This technique is very effective for the trilobites of the Ordovician of Russia, although it is also used in specimens from other regions as we can see in figure 1: a topotype of the Upper Ordovician of Morocco, Uralichas hispanicus tardus Vela & Corbacho, 2009. This technique is not entirely reliable since it only detects the resin but not the density difference of different broken pieces that can be present in an authentic trilobite and its matrix, so these parts could belong to different specimens. This problem is solved with the utilization of a CT Scanning and in some cases with simple radiography. This paper presents mainly holotypes, paratypes and other specimens included in scientific articles, belonging to the Lower Ordovician, Upper Ordovician and Middle Devonian. The authenticity of the figured specimens are further substantiated and demonstrate that they retain the necessary characters to make an accurate description of the designated new species.
Note:	Altres ajuts: Associació d'Experts Jurídics de Catalunya dins del projecte APTC2019-PALEO
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	CT Scanning ; Radiography ; X-ray ; Trilobites ; Fakes ; Legal Expert in Paleontology
Published in:	American Journal of Life Sciences, Vol. 7, Issue 2 (April 2019) , p. 47-53, ISSN 2328-5702

DOI: 10.11648/j.ajls.20190702.12

7 p, 992.1 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Institut Català de Paleontologia Miquel Crusafont (ICP)
Articles > Research articles
Articles > Published articles