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Phlebopteris

From Wikipedia, the free encyclopedia

Phlebopteris
Temporal range: Ladinian–Early Cretaceous
Fossils of Phlebopteris muensteri from the latest Triassic of Germany
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Division: Polypodiophyta
Class: Polypodiopsida
Order: Gleicheniales
Family: Matoniaceae
Genus: Phlebopteris
Brongniart 1836
Species
  • Phlebopteris dunkeri (Schenk) Schenk 1875.
  • Phlebopteris fiemmensis Kustatscher et al, 2014
  • Phlebopteris polypodioides (type) Brongniart 1836
  • Phlebopteris woodwardii Leckenby 1864

Phlebopteris is an extinct genus of Mesozoic fern belonging to the family Matoniaceae.[1][2]

Description and morphology

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it is diagnosed by "pinna exhibiting short or long pinnules with decurrent or non-decurrent base; midrib often reaching the apex; secondary veins dichotomously branched, with or without forming a reticulate venation; circular sori lacking indusium; sori with five to six annulate sporangia annulus; trilete, subtriangular, tetrahedral or round spores."[1] Phlebopteris angustiloba and Phlebopteris muensteri are suggested to have grown as herbaceous plants rather than as tree ferns.[3]

The oldest fossil of the genus is known from the Ladinian of Italy.[2] The genus was almost globally distributed during the Jurassic, with a concentration of species in the northern hemisphere.[1] Species like Phlebopteris polypodioides, P. tracyi, and P. angustiloba are suggested to have grown in humid habitats as understory vegetation,[1][3] with Phlebopteris woodwardii suggested to have grown along riverbanks, as well as in heaths and peat swamps.[1]

References

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  1. ^ a b c d e Badihagh, Mohammad Taghi; Uhl, Dieter (2019-01-08). "The first occurrence of Phlebopteris dunkeri and P. woodwardii (Matoniaceae) from the middle Jurassic of Iran". Journal of Palaeogeography. 8 (1): 6. Bibcode:2019JPalg...8....6B. doi:10.1186/s42501-018-0015-1. ISSN 2524-4507.
  2. ^ a b "The ferns of the late Ladinian, Middle Triassic flora from Monte Agnello, Dolomites, N-Italy - Acta Palaeontologica Polonica". www.app.pan.pl. Retrieved 2020-11-30.
  3. ^ a b Van Konijnenburg-van Cittert, Johanna H.A.; Pott, Christian; Schmeißner, Stefan; Dütsch, Günter; Kustatscher, Evelyn (February 2020). "Ferns and fern allies in the Rhaetian flora of Wüstenwelsberg, Bavaria, Germany". Review of Palaeobotany and Palynology. 273: 104147. doi:10.1016/j.revpalbo.2019.104147.