• 08/2006 - present:     upper Neogene Gray Fossil Site, Gray, northeast Tennessee.

• 10/2007:                    Paris clay pits, western Tennessee (famous Eocene plant fossils site)

• 06/2006:                    Almont, North Dakota, USA: collections of Paleocene plants and field course.

• 10/2002:                    Cedar City, Utah, USA: collections of Cretaceous plants.

• 07/1999:                    Axel Heiberg Island, Nunavut, Canadian High Arctic: collections of vascular plant fossils and botanical field study of Arctic         

•                                     living plants.

• 06/1998:                    Northern France: botanical field study trip.

• 07~08/1997:             Botanical field trip around Germany (Berlin-Rostock-Lübeck-Bremen-Köln-Bonn-Münich-Würzburg-Bayreuth-Leipzig-Berlin).

• 10~11/1996:             Ping Chau Island, Hong Kong: botanical field study trip and collections of fossil angiospermous fruits and seeds.

• 06/1996:                   Sequoia (Redwood) Forest Park, California, U.S.A.: botanical field study trip.

• 07~08/1995:             Nagoya and Osaka regions, Honshu, Japan: botanical field study trip and collections of fossil nuts.

• 10/1994:                   Limburg, the Netherlands: botanical field study trip.

• 08/1994:                   Bohemia, Czech Republic: botanical field study trip and paleobotanical trip in Bohemia Basin.

• 07/1994:                   Austrian Alps and Lower Austria: botanical field study trip.

• 02/1994:                   Bucharest, Romania: botanical field study trip.

• 07~08/1993:             Botanical expedition around China with Austrian botanists/ paleobotanists.

• 09/1991:                   Dalian, Liaoning, N.E. China: field excursion to temperate vegetation.

• 08/1990:                   Zhangjiajian National Forest Park, Hunan, C. China: field excursion to subtropical vegetation.

• 03~05/1988:             Baise Basin, Guangxi, S.W. China: plant taxonomy field study trip and collections of plant fossils.

• 10/1987:                   Nanjing, Jiangsu, E. China: field excursion to northern subtropical vegetation.

• 06~07/1987:             Fujian, S.E. China: excursion to southern subtropical and tropical vegetations and collections of plant fossils.

• 01~05/1986:             Mt. Emei, Sichuan, S.W. China: collections of Lindera (Lauraceae).

• 07~08/1985:             Mt. Hengduan, Sichuan, S.W. China: plant systematics and ecology field study trip.

• 06~07/1983:             Mt. Emei, Sichuan, S.W. China: plant systematics field study trip.

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