Retispora lepidophyta

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
	Hymenozonotriletes lepidophytus; Spelaeotriletes lepidophytus.;

Retispora lepidophyta is a spore type and an important biostratigraphic marker of the latest Devonian period. The last appearance of Retispora lepidophyta defines the Devonian-Mississippian boundary in Belgium and other places.

Description

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.

References

↑ Owens, B.; Streel, M. (March 1967). "Hymenozonotriletes lepidophytus Kedo, its distribution and significance in relation to the Devonian-Carboniferous boundary". Review of Palaeobotany and Palynology. 1 (1–4): 141–150. doi:10.1016/0034-6667(67)90116-9. hdl:2268/142122. ISSN 0034-6667.
1 2 Traverse, Alfred (1988). Paleopalynology. Unwin Hyman. ISBN 978-0045610013. OCLC 17674795.
↑ Maziane, Nadia; Higgs, Kenneth T.; Streel, Maurice (2002-04-01). "Biometry and paleoenvironment of Retispora lepidophyta (Kedo) Playford 1976 and associated miospores in the latest Famennian nearshore marine facies, eastern Ardenne (Belgium)". Review of Palaeobotany and Palynology. 118 (1–4): 211–226. doi:10.1016/S0034-6667(01)00115-4.
↑ "The Retispora lepidophyta morphon and its stratigraphic significance". ResearchGate. Retrieved 2019-07-22.
↑ Wang, De-Ming; Xu, Hong-He; Xue, Jin-Zhuang; Wang, Qi; Liu, Le (June 2015). "Leaf evolution in early-diverging ferns: insights from a new fern-like plant from the Late Devonian of China". Annals of Botany. 115 (7): 1133–1148. doi:10.1093/aob/mcv049. PMC 4648459. PMID 25979918.

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[1] Owens, B.; Streel, M. (March 1967). "Hymenozonotriletes lepidophytus Kedo, its distribution and significance in relation to the Devonian-Carboniferous boundary". Review of Palaeobotany and Palynology. 1 (1–4): 141–150. doi:10.1016/0034-6667(67)90116-9. hdl:2268/142122. ISSN 0034-6667.

[:0-2] 1 2 Traverse, Alfred (1988). Paleopalynology. Unwin Hyman. ISBN 978-0045610013. OCLC 17674795.

[3] Maziane, Nadia; Higgs, Kenneth T.; Streel, Maurice (2002-04-01). "Biometry and paleoenvironment of Retispora lepidophyta (Kedo) Playford 1976 and associated miospores in the latest Famennian nearshore marine facies, eastern Ardenne (Belgium)". Review of Palaeobotany and Palynology. 118 (1–4): 211–226. doi:10.1016/S0034-6667(01)00115-4.

[4] "The Retispora lepidophyta morphon and its stratigraphic significance". ResearchGate. Retrieved 2019-07-22.

[5] Wang, De-Ming; Xu, Hong-He; Xue, Jin-Zhuang; Wang, Qi; Liu, Le (June 2015). "Leaf evolution in early-diverging ferns: insights from a new fern-like plant from the Late Devonian of China". Annals of Botany. 115 (7): 1133–1148. doi:10.1093/aob/mcv049. PMC 4648459. PMID 25979918.