| Fossil range | − |
|---|---|
| Taxon | Caytonia |
| Authority | H.H.Thomas, 1925 |
| Subdivision ranks | Species |
| Subdivision |
Caytonia is an extinct genus of seed ferns.
Description
Caytonia has berry-like cupules with numerous small seeds arrayed along axes [1]
It was once thought to be an ancestor of the flowering plants, but after its method of pollination was identified, it was re-assigned as a gymnosperm.[2]: 249 - 250
Whole plant reconstructions
Different organs attributed to the same original plant can be reconstructed from co-occurrence at the same locality and from similarities in the stomatal apparatus and other anatomical peculiarities of fossilized cuticles.
- Caytonia nathorstii may have been produced by the same plant as Caytonanthus arberi (pollen organs) and Sagenopteris phillipsii (leaves).
References
- ^ Elgorriaga, A.; Escapa, I. H.; Cúneo, R. (2019). "Southern Hemisphere Caytoniales: vegetative and reproductive remains from the Lonco Trapial Formation (Lower Jurassic), Patagonia.". Journal of Systematic Palaeontology. 17 (17): 1477–1495. doi:10.1080/14772019.2018.1535456. hdl:11336/117441. S2CID 92287804
- ^ Chaloner, W. G. (1985). "Thomas Maxwell Harris. 8 January 1903 – 1 May 1983". Biographical Memoirs of Fellows of the Royal Society. 31: 228–260. doi:10.1098/rsbm.1985.0009. S2CID 72170558