Definition of Callipteridium. Meaning of Callipteridium. Synonyms of Callipteridium

- Callipteridium is an extinct genus of pteridospermous seed ferns belonging to the family Cyclopteridaceae. These ferns existed in the Carboniferous period...
- recorded in Great Britain include: Pteridosperm leaves: Alethopteris, Callipteridium, Cyclopteris (leaf bases), ?Desmopteris, ****sonites, Eusphenopteris...
- †Callipteridium †Callipteridium dawsonianum †Callipteridium grandifolium †Callipteridium oblongifolium †Callipteridium odontopteroides †Callipteridium...
- (horsetail) which formed thickets in shallow water and s****lines. Callipteridium C. cf. pteridium Geraldine Foliage of a medullosalean "seed fern". C...
- Lonchopteris Lonchopteridium Cardioneuropteris Cyclopteris Laveineopteris Callipteridium Margaritopteris Douropteris Neuropteris Reticulopteris Odontopteris...
- comparable form †Calamites †Calamites cruciatus †Calamites suckowii †Callipteridium †Callixylon †Calymene †Calymene breviceps †Calymene celebra †Calymene...
- ramosus †Callipteridium †Callipteridium dawsonianum †Callipteridium grandifolium †Callipteridium inaequale †Callipteridium oblongifolium †Callipteridium odontopteroides...
- Y Z †Calamites †Calamites cistiiformis †Calamites suckowi †Callipteridium †Callipteridium membranaceum – or unidentified comparable form †Callopora †Callopora...
- tentative report †Brooksella alternata †Calamites †Calamites suckowi †Callipteridium †Calymene †Calymene celebra †Calyptaulax †Camarotoechia †Cincinnetina...
- locality for species †Calliprotonia †Callipteridium †Callipteridium pteridium – or unidentified comparable form †Callipteridium virginianum †Callipteris †Callipteris...