The following papers were published in peer-reviewed journals. Full-text PDF files are linked where possible.
40. Viersen, A.P. van, 2024. Postcephalic segmentation and spines of the Siluro-Devonian odontopleurine trilobites Leonaspis Richter & Richter and Kettneraspis Prantl & Přibyl, with description of Bruthansovaspis gen. nov. from the Wenlock to Ludlow of the Prague Basin. Geologica Belgica, 27: 15-31 [ full-text ].
39. Viersen, A.P. van, accepted. The curious case of Philonyx Richter & Richter, 1952 (Trilobita, Acastidae) and its allies from the Devonian. Mainzer geowissenschaftliche Mitteilungen. 38. Viersen, A.P. van & Müller, P., accepted. Taxonomy and palaeogeographic affinities of early Emsian (Lower Devonian) trilobites from near Heiderscheid (Eisleck, Luxemburg). Ferrantia. 37. Viersen, A.P. van & Kloc, G.J., 2022. Functional morphology, coaptation and palaeoecology of Hollardops (Trilobita, Acastidae), with descriptions of new species and two new genera from the Devonian of Morocco. Geologica Belgica, 25: 99-144 [ full-text ]. 36. Viersen, A.P. van, 2021. Systematics of Devonian trochurine trilobites (Lichidae). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 300: 175-187. 35. Viersen, A.P. van & Koppka, J., 2021. Type and other species of Phacopidae (Trilobita) from the Devonian of the Ardenno-Rhenish Mountains. Mainzer geowissenschaftliche Mitteilungen, 49: 25-66 [ full-text ]. 34. Viersen, A.P. van, 2021. Type and other species of Gerastos and allied genera (Trilobita, Proetinae) from the Siluro-Devonian. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 299: 185-217. 33. Viersen, A.P. van & Lerouge, F. 2021. Timsaloproetus alissae sp. nov. (Trilobita: Proetidae) from the Lower Devonian of southern Morocco. PalZ (Paläontologische Zeitschrift). https://doi.org/10.1007/s12542-020-00543-6. [ full-text ] 32. Alberti, M. & Viersen, A.P. van, 2020. Eine neue Art von Arduennella Wenndorf, 1990 (Trilobita, Homalonotinae). Mainzer geowissenschaftliche Mitteilungen, 48: 33-46. 31. Viersen, A.P. van & Taghon, P., 2020. A poorly diversified trilobite association from the lower Emsian (Lower Devonian) in the Sankt Vith area (East Belgium). Geologica Belgica, 23: 19-28. [ full-text ] 30. Viersen, A.P. van & Lerouge, F., 2019. Cornuproetine (proetide) trilobites with nine thorax segments from the Devonian of Morocco, Germany and the Czech Republic. PalZ (Paläontologische Zeitschrift) 94 (2): 227-254. Published online: 26 October 2019. 29. Viersen, A.P. van & Magrean, B., 2019. Radiaspis taghonorum sp. nov. (Trilobita, Odontopleuridae) from the Middle Devonian Hanonet Formation in Resteigne, southern Belgium. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 293(3): 271-281. 28. Viersen, A.P. van, Taghon, P. & Magrean, B., 2019. Early Middle Devonian trilobites and events in the Nismes - Vireux-Molhain area, southern border of the Dinant Synclinorium (Belgium, northern France). Geologica Belgica, 22: 7-33. [ full-text ] 27. Viersen, A.P. van & Vanherle, W., 2018. The rise and fall of Late Devonian (Frasnian) trilobites from Belgium: taxonomy, biostratigraphy and events. Geologica Belgica, 21: 73-94. [ full-text ] 26. Viersen, A.P. van, Holland, D. & Koppka, J., 2017. The phacopine trilobite genera Morocops Basse, 2006 and Adrisiops gen. nov. from the Devonian of Morocco. Bulletin of Geosciences, 92: 13-30. [ full-text ] 25. Viersen, A.P. van, Taghon, P. & Magrean, B., 2017. The phacopid trilobites Austerops McKellar & Chatterton, 2009, Hottonops gen. nov. and Loreleiops gen. nov. from the Devonian of the Ardenno-Rhenish Mountains. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 283: 53-68. 24. Viersen, A.P. van & Holland, D., 2016. Morphological trends and new species of Cyphaspis (Trilobita, Otarioninae) in the Devonian of Morocco, Turkey, Germany and Belgium. Geologica Belgica, 19: 251-271. [ full-text] 23. Viersen, A.P. van & Heising, H., 2015. Description of Kettneraspis? prescheri sp. nov. (Trilobita, Odontopleuridae) from the “couche rouge” (Pragian, Lower Devonian) in Morocco. Geologica Belgica, 18: 15-20. [ full-text] 22. Viersen, A.P. van & Prescher, H., 2014. “Devil horned” Cyphaspis (Trilobita, Otarioninae): examples from the Middle Devonian of the Ardennes (Belgium), Eifel (Germany) and Ma’der (Morocco). Geologica Belgica, 17: 268-275. [ full-text ] 21. Viersen, A.P. van, 2013. Latest Early to early Middle Devonian acastid trilobites from the eastern part of the Dinant Synclinorium, Belgium (Rhenohercynian Zone). Memoirs of the Association of Australasian Palaeontologists, 44: 1-10. 20. Viersen, A.P. van, Rossum, A. van & Prescher, H., 2012. New data on Astycoryphe, Dohmiella, Longiproetus and Quadratoproetus (Trilobita, Proetidae) from the Middle Devonian in the Ardennes, Belgium. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 264: 77-87. 19. Viersen, A.P. van & Prescher, H., 2011. Two new species of scutelluid trilobites formerly known as Scutellum costatum from Frasnian bioherms in Belgium. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 81: 55-61. [ full-text ] 18. Viersen, A.P. van & Prescher, H., 2011. New species of the lichid trilobite Ceratarges from the Middle Devonian in Morocco. Geologica Belgica, 14: 193-202. [ full-text ] 17. Viersen, A.P. van & Bignon, A., 2011. Late Devonian (Frasnian) asteropygine trilobites from the Frasnes area, southern border of Dinant synclinorium, Belgium. Geologica Belgica, 14: 109-128. [ full-text ] 16. Viersen, A.P. van & Wilde, B. de, 2010. Goldius angusticalix sp. nov. (Trilobita, Scutelluidae) from the Couvin Formation (Middle Devonian) in Belgium, with a preliminary list of scutelluid species from the Ardennes. Geologica Belgica, 13: 153-162. [ full-text ] 15. Viersen, A.P. van & Prescher, H., 2010. Taxonomy and biostratigraphy of some proetid trilobites in the Middle Devonian of the Ardennes and Eifel (Rhenohercynian Zone). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 80: 5-45. [ full-text ] 14. Wright, A.J., Coen-Aubert, M., Bultynck, P. & Viersen, A.P. van, 2010. New data on occurrences of the Devonian rugose coral Calceola in Belgium. Memoirs of the Association of Australasian Palaeontologists, 39: 121-129. 13. Viersen, A.P. van & Prescher, H., 2009. Trilobites from the Longlier Formation (Lower Devonian; Neufchateau Synclinorium, southeast Belgium): First record of Pragian associated "Rhenish" and "Bohemian" assemblages from the Ardennes. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 79: 5-26 [ full-text ]. 12. Viersen, A.P. van, Prescher, H. & Savelsbergh, J., 2009. Description of two new trilobites from the Ahrdorf Formation (Middle Devonian) at the "Trilobitenfelder" of Gees, Eifel, Rhenish Mountains. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 79: 43-53 [ full-text ]. 11. Viersen, A.P. van & Prescher, H., 2008. Devonian Proetidae (Trilobita) from the Ardennes Massif (Belgium, N France) and the Eifel Hills (W Germany). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 78: 9-29. [ full-text ] 10. Bignon, A., Crônier, C. & Viersen, A.P. van, 2008. Fluctuations in trilobite palaeobiodiversity during the Devonian in the Ardennes Massif. Publicaciones del Instituto Geológico y Minero de España. Serie: Cuadernos del Museo Geominero, 9: 49-56. 9. Viersen, A.P. van, 2008. First record of the odontopleurid trilobite Koneprusia from the lower Eifelian of Vireux-Molhain (northern France), with remarks on the associated trilobite fauna. Geologica Belgica, 11: 83-91. [ full-text ] 8. Crônier, C. & Viersen, A.P. van, 2008. The 'Mur des douaniers', an exceptionally well-preserved early Eifelian fossil site. Bulletin de la Societe Geologique de France, 179: 89-95 [ full-text ]. 7. Viersen, A.P. van & Prescher, H., 2007. Note on Cyphaspis Burmeister 1843 (Trilobita, Aulacopleuridae), with a review of several species mainly from the Devonian of Belgium and Germany. Senckenbergiana lethaea, 87: 157-169 [ full-text ]. 6. Crônier, C. & Viersen, A.P. van, 2007. Trilobite palaeobiodiversity during the Devonian in the Ardennes Massif. Bulletin de la Societe Geologique de France, 178: 473-483 [ full-text ]. 5. Viersen, A.P. van, 2007. Preliminary report of trilobites from the Hanonet Formation (Eifelian – Givetian transition), southern border of Dinant Synclinorium, Belgium. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 77: 15-29. [ full-text ] 4. Viersen, A.P. van, 2007. Kettneraspis, Radiaspis and Ceratarges (Trilobita) from the Middle Devonian of the Rochefort area (Ardennes, Belgium). Scripta Geologica, 134: 1-18. [ full-text ] 3. Viersen, A.P. van, 2006. Dohmiella Lütke 1990 (Trilobita) a valid proetid genus, with two new species from Belgium and Germany. Senckenbergiana lethaea, 86: 229-241 [ full-text ]. 2. Viersen, A.P. van, 2006. New Middle Devonian trilobites from Vireux-Molhain (Ardennes, northern France). Senckenbergiana lethaea, 86: 63-75 [ full-text ]. 1. Magrean, B. & Viersen, A.P. van, 2005. A revision of Devonian trilobites from Belgium - Part 1. The genera Cornuproetus and Radiaspis. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre, 75: 87-93. |