Glyptagnostus and Associated Trilobites in the United States


Book Description

The systematics, faunal associations, and stratigraphic significance of American species of Glyptagnostus are discussed, and associated trilobites representing 21 genera and 31 species are described and figured.

























Bibliography of North American Geology


Book Description

1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation includes material previously issued in the 1929/30-1935/36 issues and also material for 1937-39 not published separately.