1. The genus Callixylon from the Upper Devonian of central and western New York;Arnold C. A.;Papers Michigan Acad.,1930
2. On Callixylon newberryi (Dawson) Elkins et Wieland;Arnold C. A.;Contr. Mus. Paleontol. Univ. Michigan,1931
3. On seedlike structures associated with Archaeopteris, from the Upper Devonian of northern Pennsylvania;Arnold C. A.;Contr. Mus. Paleontol. Univ. Michigan,1935
4. Observations on fossil plants from the Devonian of eastern North America. II. Archaeopteris macilenta and A. sphenophyllifolia of Lesquereux;Arnold C. A.;Contr. Mus. Paleontol. Univ. Michigan,1936
5. Observations on fossil plants from the Devonian of eastern North America. IV. Plant remains from the Catskill Delta deposits of northern Pennsylvania and southern New York;Arnold C. A.;Contr. Mus. Paleontol. Univ. Michigan,1939