Pleuromeia dubia is a tall species for the genus, with distinctive elongate leaf scars, and known from the Early Triassic of Australia and South Africa. Like other species of Pleuromeia it was a survivor of the marked greenhouse spike at the end of the Early Triassic.[1] It was originally assigned to the genus Gregicaulis, and its placement in the genus Pleuromeia has been questioned, due to its significant differences to the core Eurasian members of the genus.[2]

Pleuromeia dubia
Temporal range: Early Triassic
Life restoration
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Lycophytes
Class: Lycopodiopsida
Order: Isoetales
Family: Pleuromeiaceae
Genus: Pleuromeia
Species:
P. dubia
Binomial name
Pleuromeia dubia
(Anderson and Anderson, 1985)
Synonyms

Gregicaulis dubius

leafy apex of Pleuromeia dubia from the Early Triassic Newport Formation near Newport, NSW

See also

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References

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  1. ^ Retallack, Gregory J. (2013). "Permian and Triassic greenhouse crises". Gondwana Research. 24: 90–103. doi:10.1016/j.gr.2012.03.003.
  2. ^ Deng, Shenghui; Lu, Yuanzheng; Fan, Ru; Ma, Xueying; Lyu, Dan; Luo, Zhong; Sun, Yanqi (December 2022). "A new species of Pleuromeia (Lycopsid) from the upper Middle Triassic of Northern China and discussion on the spatiotemporal distribution and evolution of the genus". Geobios. 75: 1–15. doi:10.1016/j.geobios.2022.10.001.