Caytonia nathorstii is an extinct species of seed ferns.[1]
| Caytonia nathorstii 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 |
| Species: | †C. nathorstii
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| Binomial name | |
| †Caytonia nathorstii | |
Description
editCaytonia has berry like cupules with numerous small seeds arrayed along axes
Whole plant reconstructions
editDifferent 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, Greg J; Dilcher, David L (1988). "Reconstructions of Selected Seed Ferns" (PDF). Annals of the Missouri Botanical Garden. 75 (3). Missouri Botanical Garden Press: 1045. doi:10.2307/2399379. JSTOR 2399379 – via JSTOR.
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