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Spiniferites heterostylus
| heterostylus | |
| Heisecke, A.M. (1970) | |
| Stover, L.E. and Evitt, W.R. (1978) | |
| active | |
| heterostylus | |
| Heisecke, A.M. (1970) | |
| Stover, L.E. and Evitt, W.R. (1978) | |
| active | |