| Publication Type: | Journal Article |
| Year of Publication: | 1941 |
| Authors: | J. W. Wells |
| Journal: | Bulletins of American Paleontology |
| Volume: | 26 |
| Issue: | 98 |
| Pagination: | 301 - 326, pl. 1-3 |
| Date Published: | 1941/// |
| URL: | http://archive.org/details/bulletinsofameri95100pale |