Protoconiferus cerina
- Citations total:
- 1
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| details | Middle Liassic | USSR(Urals) | Klumushina,L.P. et al. To the problem of age boundries within coal-bearing Formations of the eastern slopes of the North Urals. (In: Sporen and Pollen in Oils and Deposits of Oil and Gas-Bearing Regions of the USSR.) | 1971 |