| Publication Type: | Journal Article |
| Year of Publication: | 1933 |
| Authors: | J. W. Wells |
| Journal: | Bulletins of American Paleontology |
| Volume: | 18 |
| Issue: | 67 |
| Pagination: | 83 - 292, pl. 1-16 |
| Date Published: | 1933/// |
| URL: | http://archive.org/details/bulletinsofameri186467193133pale |