A fructification with unusual branching arrangement, Perezlaria oaxacensis gen. et sp. nov., is described from the Middle Jurassic Zorrillo Formation of Oaxaca, Mexico. The sporangial heads are similar to the pollen‐bearing organs of several Mesozoic pteridosperms. The association of P. oaxacensis , as well as some isolated organs resembling the synangia of Caytonanthus , with glossopteroid foliage is noted.
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Delevoryas et al. (1971) studied this question.