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Caytonia nathorstii; Temporal range: Jurassic PreꞒ Ꞓ O S D C P T J K Pg N −
	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
Binomial name
	†Caytonia nathorstii;

Caytonia nathorstii is an extinct species of seed ferns.^[1]

Description

Caytonia has berry like cupules with numerous small seeds arrayed along axes

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

^ 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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[1] 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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