Biology:Caytonia

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Short description: Extinct genus of seed ferns

Caytonia
Temporal range: Jurassic
Caytonia nathorsti Natural History Museum v18582 photo Retallack 1980.jpg
Caytonia nathorstii ovulate structure, Middle Jurassic, Gristhorpe Bed, Cloughton Formation, Cayton Bay, Yorkshire.
Scientific classification e
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.

A complete reconstruction of Caytonia nathorstii plant Retallack and Dilcher 1988[1]

Description

Caytonia has berry-like cupules with numerous small seeds arrayed along axes [2]

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.


References

  1. Retallack, G.J.; Dilcher, D.L. (1988). "Reconstructions of selected seed ferns". Missouri Botanical Garden Annals 75 (3): 1010–1057. doi:10.2307/2399379. 
  2. 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. 

Wikidata ☰ Q28208752 entry