Jamaican fossil Echini / by Benjamin Walworth Arnold and Hubert Lyman Clark. With descriptions of new species of Cainozoic Echinoidea / by Herbert L. Hawkins.

v.50:no.1 (1927)

Some additional fossil Echini from Jamaica / by Benjamin Walworth Arnold and Hubert Lyman Clark.

v.54:no.2 (1934)

Systematic revision of fossil prairie dogs with descriptions of two new species / H. Thomas Goodwin.

no.86 (1995)