E. Hitchcock. 1843. Description of five new specie of fossil footmarks, from the red sandstone of the valley of the Connecticut River. Reports of the First, Second, and Third Meetings of the Association of American Geologists and Naturalists 1843:254-264
Bibliographie (2)
E. Hitchcock. 1858. Ichnology of New England. A Report on the Sandstone of the Connecticut Valley, Especially its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts
DOI ↗
E. Hitchcock. 1843. Description of five new specie of fossil footmarks, from the red sandstone of the valley of the Connecticut River. Reports of the First, Second, and Third Meetings of the Association of American Geologists and Naturalists 1843:254-264