Tielt Formation Description
The Tielt Formation is 25 m (82 ft) thick at most. It is subdivided into two members : the Kortemark and Egemkapel Members. The formation lies stratigraphically on top of the Kortrijk Formation (early Ypresian sandy clay and silt). In the northwestern part of Belgium, the Gentbrugge Formation (late Ypresian marine clay and silt) covers the Tielt Formation. If the Gentbrugge Formation is absent, the younger Brussels Formation (Lutetian calcareous sand) is directly found on top of the Tielt Formation.[ 1] [ 2]
Fossil content
Crustaceans
Crustaceans reported from the Tielt Formation
Genus Species Location
Stratigraphic position Material Notes Images
Loerenthopluma L. danielae Ampe sand & clay pit near Egem.[ 4]
Egemkapel Clay Member.[ 4]
A dozen well-preserved specimens.[ 4]
A retroplumid crab.
Upogebia U. lambrechtsi Ampe sand & clay pit, Egem.[ 5]
Egemkapel Clay Member.[ 5]
Over 100 specimens.[ 5]
An upogebiid mud shrimp.
References
1 2 Steurbaut, 2006, p.76 1 2 Tielt Formation - National Commission on the Stratigraphy of Belgium1 2 Hovestadt, Dirk; Hovestadt-Euler, M. (January 2010). "Urobatis molleni nov.sp. (Chondrichthyes, Myliobatiformes, Urolophidae) in the Eocene of Belgium" . Geominpal Belgica . 1 (3): 66– 69. 1 2 3 Van Bakel, Barry; Artal, Pedro; Fraaije, R.; Jagt, John W. M. (January 2010). "Loerenthopluma Danielae, a new crab (Decapoda, Brachyura, Retroplumidae) from the lower Eocene of Northwest Belgium" . Brachyura: A Homage to Danièle Guinot : 41– 49. 1 2 3 Fraaije, R. (January 2006). "Two new Paleogene species of mud shrimp (Crustacea, Decapoda, Upogebiidae) from Europe and North America" . Bulletin of the Mizunami Fossil Museum (33): 81– 89. Bibliography
Steurbaut, Etienne; De Ceukelaire, Marleen; Lanckacker, Tim; Matthijs, Johan; Stassen, Peter; Van Baelen, Hervé; Vandenberghe, Noël (2017), An update of the lithostratigraphy of the Ieper Group (PDF) , National Commission for the Stratigraphy of Belgium , pp. 1– 79, retrieved 2020-09-07 Steurbaut, Etienne (2006), "Ypresian" , Geologica Belgica 9 : 73– 93, retrieved 2020-09-07 Laga, P.; Louwye, S.; Geets, S. (2001), "Paleogene and Neogene lithostratigraphic units (Belgium)" , Geologica Belgica 4 (1– 2): 135– 152, doi :10.20341/gb.2014.050 , retrieved 2020-09-07