| Family | Scientific Name | Author | Year | Common Name |
| Platytroctidae | Holtbyrnia sp. | Parr | 1937 | Tubeshoulder sp. |
Holtbyrnia sp.
Unique Characteristics: Body shallow to deep, moderately compressed to round in cross-section, upper and lower keels shallow or absent; predorsal margin more than 1 scale wide. Maxilla ending behind eye. Dentary without a gap in teeth or ligament; vomerine teeth closely spaced. Premaxillary tusks present Lateral scales smaller, usually more than 55. Cleithral symphysis normal, not a spine. Pelvic-fin rays usually 8 or 9 (usually 9). One-third or more of dorsal fin in advance of anal-fin origin.
Similar Species: None