Pentoxyleae Sahni, 1948 Pentoxylales is an extinct order of seed plants known from the Jurassic and Early Cretaceous of East Gondwana.

The first specimens belonging to Pentoxylales were reported by Birbal Sahni in 1948 from Jurassic-Cretaceous strata of the Rajmahal Hills of northeastern India.

[2] The stem of Pentoxylales, referred to by the morphogenus Pentoxylon, consists of 5 or 6 wedge shaped segments embedded within thin walled ground tissue.

[1] The pollen organs of Pentoxylales, referred to the morphogenus Sahnia, consist of microsporophylls arranged in tight spirals around or on a cylindrical or dome-shaped receptacle.

[1] Seed bearing organs of Pentoxylales, dubbed Carnoconites, which have a central axis or peduncle, which branches into numerous structures that end with an ovule.