| Publication Type: | Journal Article |
| Year of Publication: | 1937 |
| Authors: | J. W. Wells |
| Journal: | Bulletins of American Paleontology |
| Volume: | 23 |
| Issue: | 79 |
| Pagination: | 235 - 250, pl. 1-2 |
| Date Published: | 1937/// |
| URL: | http://archive.org/details/bulletinsofameri237779193537pale |