| |
Hu, Chung-Hung. Ontogenies of a few Upper Cambrian trilobites from the Deadwood formation, South Dakota. Chung-Hung Hu. In Transaction and Proceedings of the Palaeontological Society of Japan , Transaction and Proceedings of the Palaeontological Society of Japan. S.371-387 : .1980, No. 119.
| | |
|