[1][2][3] Walchian conifers generally grew as small trees.

The earliest "voltzian voltziales" are known from the late Early Permian (Kungurian).

[3] Modern conifer lineages emerged from voltzialean ancestors from the Late Permian to Jurassic.

[4] Voltzialean conifers outside modern groups such as Krassilovia/Podozamites survived into the Cretaceous, before becoming extinct.

[5] The genus Voltzia was named in honour of the French geologist Philippe Louis Voltz.