Kansas Geological Survey, Current Research in Earth Sciences, Bulletin 241,
part 1
Allostratigraphic and Sedimentologic Applications of Trace Fossils to the Study of Incised Estuarine Valleys
Fig. 24. Undichna britannica, X0.7. Note Treptichnus bifurcus (lower right).
Kansas Geological Survey
Web version March 19, 1998
http://www.kgs.ku.edu/Current/1998/buatois/fig24.html
email:lbrosius@kgs.ku.edu