Callistophytales
Caytoniales
Conifers
---Araucariaceae
---Cephalotaxaceae
---Cheirolepidaceae
---Cupressaceae (redwoods & junipers)
---Pinaceae (pines, cedars, firs, etc)
---Podocarpaceae
---Sciadopityaceae
---Taxaceae (yews)
---Voltziales (basal conifers)
Cordaitales
Corystospermales
Cycadales
(cycads)
---Cycadaceae
---Stangeriaceae
---Zamiaceae
Ginkgoales (ginkgos)
Gnetophyta
Lyginopterids (earliest seed plants)
Medullosales