summers, 2010-2012: Fossil field trip to southwestern China (Study Abroad Program, 3-week each summer): Cambrian Chengjiang Fauna, Jurassic Lufeng Dinosaur Park, numerous Neogene plant sites in Yunnan Province, and modern tropical rain forest in southwestern China
summer, 2009: Lower Cretaceous Jehol biota, west Liaoning province; K/T boundary, Jiaying, Heilongjiang province; Middle-Upper Eocene Fushun Coalmin, Liaoning province (all in northeast China)
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.