Author

Hello, I am Christian Prins, emeritus professor in computer science and passionate about paleontology. In this last area, I am not a professional but I am trying to improve! At the beginning I had big problems with identifications. To see things more clearly, I had to read numerous publications in French, English and Russian (unfortunately I don't know German, which is also very useful in paleontology). I warmly thank the specialists who helped me, such as Francis Amédro and William James Kennedy.

I created this site to describe Albian ammonites and help collectors identify them. I hope that pros will also find useful information there, such as interesting specimens. I tried to be as rigorous as possible in the identifications: description, measurements, photos, age (geological stage), provenance and references. An Ammonoidea section explains the descriptive vocabulary of ammonites, an obstacle for beginners. I also added a glossary to define all these terms.

This no-frills site is written in HTML 5 and CSS 3. It does not yet have a "responsive design" and is designed for PCs or Macs with screens of 1800 pixels wide or more.

Here are my few writings in paleontology and mineralogy. For journals, I put the ISSN at the first occurrence only:

C. Prins. Itinéraires minéralogiques en Morvan. Feuillet trimestriel de l’Association Géologique Auboise (AGA), no 77, 6-10, 2002. ISSN 0249-1303.
C. Prins. Les fossiles sur Internet. Feuillet trimestriel de l’AGA, no 79, 5-8, 2003.
C. Prins. Initiation à la minéralogie. Bulletin Annuel de l’AGA, no 24-25, 5-29, 2004. ISSN 0249-0102.
C. Prins, Quelques ammonites albiennes de Madagascar, Bulletin Annuel de l'AGA, no 26, 23-47, 2005. With 2 figures et 78 photographs.
C. Prins, A.E. Richter. Über Phylloceras (Hypophylloceras) velledae und Phylloceras (Goretophylloceras) inflatum aus dem Alb Madagaskars (Sur Phylloceras (Hypophylloceras) velledae et Phylloceras (Goretophylloceras) inflatum de l'Albien malgache). Leitfossil, 2005. Online journal in German (www.leitfossil.de). Andreas Richter has translated in German my version submitted in English!
C. Prins. Lexique franco-anglais et anglo-français sur les ammonites, avec définitions des termes. Feuillet trimestriel de l’AGA, no 85, 12-23, 2005.
C. Prins. Quelques données sur le genre Douvilleiceras et ses espèces de l'Albien. Bulletin Annuel de l'AGA, no 27, 18-24, 2006. With 13 photographs.
C. Prins, L’Albien du Cher à l’Yonne. Bulletin Annuel de l'AGA, no 27, 10-17, 2006. With 9 photographs.
C. Prins. Quelques ammonites albiennes de Madagascar : addendum. Bulletin Annuel de l'AGA, no 27, 43-50, 2006. Avec 14 photographs.
C. Prins. L'âge des Sables de Frécambault à Saint-Florentin (Yonne). Revue scientifique Bourgogne-Franche-Comté Nature, no 34, 179-193, 2021. ISSN 2648-692X. With 3 maps and 13 photographs.