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Working Group Upper Cretaceous Foraminifera Catalog of Maastrichtian Foraminifera

Mission and path

we want to build a comprehensive catalog of Upper Cretaceous foraminifera. It shall be freely accessible thru the webpage.

We sample and process Upper Cretaceous rocks as a hobby out of fun. We extract the forams, photograph and identify them based on a comprehensive set of literature.

We integrate images provided by professionals. The share of images by professionals shall be about two-thirds.

Who we are

  • Hesemann, Michael: concept, sampling, processing, photographing and identification, web and database, contact to professional contributors
  • Ketelsen, Dieter: preparing fieldtrips, sampling, processing, photographing and identification
  • Raveling, Stefan: providing core-samples and from construction sites, processing, photographing and identification
  • Contributors

  • Baubkus, Werner: sampling and photographing
  • Frenzel, Peter: 600+ images and samples
  • Friedman, Virginia: Cenomanian specimens of the Eagle Ford Formation, Texas.
  • Georgescu, Marius Dan: contribution of 300+ images
  • Jaff, R.B.N.: contribution of images from his PhD thesis
  • Museum Helgoland (Peter Schumacher): providing samples

  • We thank the Smithonian Institution National Museum of Natural History and the IODP, ODP and DSPD for sharing their work.


    integration of 2414 datasets, of which
    1993 are contributed and identified by scientists.
    Each consists of an image and accompanying 30 data.

    accessibilty of images and data through the
    well structured database and query

    includes 329 genera and 811 species

    key to species for benthics

    talks on Upper Cretaceous foraminifera were given in Berlin, Hamburg, Hannover and near Schwerin

    A publication was made: Hesemann, M., Dieter Ketelsen, 2017: Index Foraminifera in Chalk Marl Streaks at the Brodtener Ufer (Coast of the Western Baltic Sea), Geschiebekunde aktuell 33 (4): 111-117

    Actual work and plans for 2019

    - working on Cretaceous material from Helgoland, North Sea.
    - photographing of Santonian specimens provided by Stefan Raveling K-PG boundary
    - processing of samples from the field-trip to Denmark in 2017 (image)

    - photographing of forams from a well-site in the Foula Subbasin, provided by Micropress Europe
    - integrating of contributed images