Dollyphyton

Dollyphyton; Temporal range:
	Holotype of Dollyphyton boucotii, from the Douglas Lake Member of Lenoir Limestone, at Douglas Dam, Tennessee[1]
Scientific classification
Kingdom:	Plantae
Division:	Bryophyta
Class:	Sphagnopsida
Order:	Sphagnales
Family:	Flatbergiaceae
Genus:	†Dollyphyton; Retallack (2019) [1]
Type species
	Dollyphyton boucotii; Retallack (2019)

Dollyphyton is a genus of fossil with controversial interpretation from the Middle Ordovician (Darriwilian, 460 million years old) Douglas Lake Member of the Lenoir Limestone from Douglas Dam Tennessee.[1] The generic name honors Dolly Parton whose Dollywood resort is nearby. The epithet honors Art Boucot.

Description

Dollyphyton is considered as a fossil peat moss by Gregory Retallack. Its leaves are wide and have lateral teeth. Its capsule is terminal on a short pseudopodium.

Interpretation

Unlike most peat mosses Dollyphyton has broad leaves like those of the living peat moss Flatbergium, considered basal to Sphagnales.[2] Interpretation of this fossil as a peat moss has been doubted in some quarters[3] but accepted in others.[4]

References

Retallack, G.J. (2019). "Ordovician land plants and fungi from Douglas Dam, Tennessee". The Palaeobotanist. 68: 1–33. doi:10.54991/jop.2019.43.
Shaw, A.J.; Cox, C.J.; Buck, W.R.; Devos, N.; Buchanan, A.M.; Cave, L.; Seppelt, R.; Shaw, B.; Larrain, J.; Andrus, R.; Greilhuber, J. (2022). "Newly resolved relationships in an early plant lineage: Bryophyta Class Sphagnopsida (peat mosses)". American Journal of Botany. 974: 1511–1531.
Edwards, Dianne; Morris, Jennifer L.; Axe, Lindsey; Duckett, Jeffrey G.; Pressel, Silvia; Kenrick, Paul (2022). "Piecing together the eophytes – a new group of ancient plants containing cryptospores". New Phytologist. 233 (3): 1440–1455. doi:10.1111/nph.17703. ISSN 0028-646X. PMID 34806774. S2CID 244495761.
Leigh, Egbert (2022). "Fossil soils: trace fossils of ecosystems on land and windows on the context of evolution". Evolution Education and Outreach. 15 (14): 1–5. doi:10.1186/s12052-022-00173-3. S2CID 255483235.

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[Retallack_2019-1] Retallack, G.J. (2019). "Ordovician land plants and fungi from Douglas Dam, Tennessee". The Palaeobotanist. 68: 1–33. doi:10.54991/jop.2019.43.

[2] Shaw, A.J.; Cox, C.J.; Buck, W.R.; Devos, N.; Buchanan, A.M.; Cave, L.; Seppelt, R.; Shaw, B.; Larrain, J.; Andrus, R.; Greilhuber, J. (2022). "Newly resolved relationships in an early plant lineage: Bryophyta Class Sphagnopsida (peat mosses)". American Journal of Botany. 974: 1511–1531.

[3] Edwards, Dianne; Morris, Jennifer L.; Axe, Lindsey; Duckett, Jeffrey G.; Pressel, Silvia; Kenrick, Paul (2022). "Piecing together the eophytes – a new group of ancient plants containing cryptospores". New Phytologist. 233 (3): 1440–1455. doi:10.1111/nph.17703. ISSN 0028-646X. PMID 34806774. S2CID 244495761.

[4] Leigh, Egbert (2022). "Fossil soils: trace fossils of ecosystems on land and windows on the context of evolution". Evolution Education and Outreach. 15 (14): 1–5. doi:10.1186/s12052-022-00173-3. S2CID 255483235.