Here is an overview of my published research on Devonian trilobites. Full-text PDF files are linked in some cases. You can also find me on ResearchGate. For questions please contact me at:



Peer reviewed journals

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., 2011b. 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., 2011a. 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.

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.

5. Viersen, A.P. van, 2007b. 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, 2007a. 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, 2006b. 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, 2006a. 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.


Other work

19. Viersen, A.P. van, 2016c. Trilobieten uit de Formatie van Jemelle. Spirifer, 40 (4): 16-22.

18
. Viersen, A.P. van, 2016b. Trilobieten uit het vroege Midden Devoon van de Ardennen. Grondboor & Hamer, 70: 68-75.

17. Viersen, A.P. van, 2016a. Trilobiten uit de Ardennen, Eifel en Marokko. Rondom Schokland, 56 (2): 16-18.

16. Lebrun, P. & Viersen, A.P. van, 2015. Des trilobites du Dévonien moyen dans la carrière de Resteigne (Belgique). Fossiles, Revue française de Paléontologie, 11: 25-28.

15. Viersen, A.P. van, 2015. Trilobites du Dévonien des Ardennes (zone rhéno-hercynienne): biostratigraphie, évolution et événements. Fossiles, Revue française de Paléontologie, 11: 5-24.

14. Viersen, A.P. van & Daumeries, G., 2012. Les trilobites du Dévonien ardennais du “Mur des douaniers” à Vireux-Molhain. Fossiles, Revue française de Paléontologie, 8: 5-15.

13. Viersen, A.P. van & Prescher, H., 2011. Devonian trilobites from Belgium. Abstracts, 2. Trilobiten-Tagung. Senckenberg Museum, Frankfurt am Main.

12. Viersen, A.P. van, 2010. De reusachtige trilobiet Scabrella asselberghsi en haar bijzondere gezelschap uit het Onder-Devoon van België. Grondboor & Hamer, 64: 153-156.

11. Viersen, A.P. van, 2009. De trilobieten van de Formatie van Hanonet (grens Eifeliaan/Givetiaan), Belgische Ardennen. Geolithos, 33(3): 6-12.

10. Viersen, A.P., Prescher, H. & Savelsbergh, J., 2009. Zwei neuen Trilobitenarten der Ahrdorf Formation (Mittel-Devon) aus den „Trilobitenfeldern“ bei Gees (Gerolstein) in der Eifel. Aachen, 27 pp. [ full-text ]

9. Viersen, A.P. van & Cremers, G., 2007. Eerste vondst van de trilobiet Burmeisterella in het riviergrind van Arcen, Nederlands Limburg. Grondboor & Hamer, 61: 123-124.

8. Viersen, A.P. van, 2007. De trilobieten van de Mur des douaniers. Spirifer, 31: 4-9.

7. Viersen, A.P. van, 2006. De Belgische Devoonstratigrafie herzien. Gea, 39: 131-134.

6. Viersen, A.P. van, 2005. Devonian trilobites from the Ardennes and Linksrheinische Schiefergebirge - a joint Rhenohercynian perspective. Abstracts, Meuse-Rhine Euregio Geologists Meeting, Alden-Biesen.

5. Viersen, A.P. van, 2005. Devoontrilobieten uit het Limburgse riviergrind. Grondboor & Hamer, 59: 17-23.

4. Viersen, A.P. van, 2004. De trilobiet Walliserops trifurcatus en zijn drietand. Gea, 37: 37: 97-98.

3. Viersen, A.P. van & Hille, P., 2004. Trilobietenvervalsingen. Gea, 37: 132-135.

2. Viersen, A.P. van, 2004. Zeldzame Devoontrilobieten uit de Belgische Ardennen. Gea, 37: 77-84.

1. Viersen, A.P. van, 2004. De mythe van Phacops latifrons. Grondboor & Hamer, 58: 66-68.



Photo: Kettneraspis? prescheri van Viersen & Heising, 2015 | couche rouge, Ihandar Formation (Pragian) | Issoumour, Morocco.