Ephedra laevigataeformis
- Citations total:
- 2
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| details | Late Eocene | Mississippi | Frederiksen,N.O. Sporomorphs from the Jackson Group, (Upper Eocene) and adjacent strata of Mississippi and western Alabama. | 1980 | |
| details | Albian | USSR(Urals) | Frederiksen,N.O. Sporomorphs from the Jackson Group, (Upper Eocene) and adjacent strata of Mississippi and western Alabama. | 1980 |