Caytonia Temporal range:
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Caytonia nathorstii ovulate structure, Middle Jurassic, Gristhorpe Bed, Cloughton Formation, Cayton Bay, Yorkshire. | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | †Pteridospermatophyta |
Order: | †Caytoniales |
Family: | †Caytoniaceae |
Genus: | †Caytonia H.H.Thomas, 1925 |
Species | |
Caytonia is an extinct genus of seed ferns.
![](Https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Caytonia_reconstruction_Retallack_and_Dilcher_1988.jpg/200px-Caytonia_reconstruction_Retallack_and_Dilcher_1988.jpg)
Description
[edit]Caytonia has berry-like cupules with numerous small seeds arrayed along axes [2]
Whole plant reconstructions
[edit]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
[edit]- ^ Retallack, G.J.; Dilcher, D.L. (1988). "Reconstructions of selected seed ferns". Missouri Botanical Garden Annals. 75 (3): 1010–1057. doi:10.2307/2399379. JSTOR 2399379.
- ^ 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. S2CID 92287804.