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Spore type and an important biostratigraphic marker of the latest Devonian period From Wikipedia, the free encyclopedia
Retispora lepidophyta is a spore type and an important biostratigraphic marker of the latest Devonian period.[3][4][5] The last appearance of Retispora lepidophyta defines the Devonian-Mississippian boundary in Belgium and other places.
Retispora lepidophyta | |
---|---|
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Lycophytes |
Class: | Lycopodiopsida |
Order: | Selaginellales |
Family: | incertae sedis |
Genus: | †Retispora |
Species: | †R. lepidophyta |
Binomial name | |
†Retispora lepidophyta (Kedo) Playford | |
Synonyms | |
Retispora is trilete, reticulate, and has a distinctly "fried egg" appearance, as the spore is zonate, and the inner area is much darker than the outer area.[2]
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