Phlebopteris
Phlebopteris
Extinct genus of ferns
Phlebopteris is an extinct genus of Mesozoic fern belonging to the family Matoniaceae, 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] 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] It probably preferred moist habitats.[1]
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