| As in other gymnosperms, the ovule consisted of one megasporangium within a single integument. |
| The known flora consists of 41 ferns and fern allies, 3 gymnosperms, 291 monocots, and 516 dicots. |
| The plants in this age also switched over to gymnosperms instead of being Cycads. |
| Copia group sequences have been found in diverse species, including single-cell algae, bryophytes, gymnosperms, and angiosperms. |
| Among the plant branches, there were several supported groupings representing only gymnosperms or conifers. |
| A characteristic feature of gymnosperms is polyembryony manifested in the formation of more than one embryo in immature seed. |
