The Early Cretaceous (Late Ryazanian - Early Hauretivian) ammonite fauna of North-East Greenland: Taxonomy, Biostratigraphy and BiogeographyISBN: 978-1-4051-8014-6
Paperback
232 pages
June 2007, Wiley-Blackwell
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Peter Alsen is the author of The Early Cretaceous (Late Ryazanian - Early Hauretivian) ammonite fauna of North-East Greenland: Taxonomy, Biostratigraphy and Biogeography, published by Wiley.