Step 1: Glossopteridales is an extinct order of seed-bearing plants known mainly from Permian age fossils found across the former Gondwana landmass, marked by the distinctive tongue-shaped Glossopteris leaves.
Step 2: In the widely used gymnosperm classification scheme presented by Bhatnagar and Moitra in their textbook, Glossopteridales is grouped under class Coniferopsida, based on shared wood anatomy and reproductive features with conifer-related lineages.
Step 3: Progymnospermopsida covers an earlier, more primitive fossil group, Cycadopsida covers cycads, and Gnetopsida covers the gnetophytes, none of which is where this textbook places Glossopteridales.
Step 4: So the correct answer is Coniferopsida.