Paleosigma
- Citations total:
- 2
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| details | Late Ordovician | Middle Gothlandian | Worldwide | Taugourdeau,P. Importance of evolution of the dispersed scolecodonts, (Annelids) in the stocking of seas during Paleozoic times. | 1983 |
| details | Nd | Nd | Eisenack,A. Contributions to Annelid research | 1975 |