The upcoming discussion will update you about the difference between Cycadeoideaceae and Williamsoniaceae.
Difference # Cycadeoideaceae:
1. Cycadeoideaceae is a family of younger and advanced members of Bennettitales.
2. Cycadeoideaceae is silicified and well-preserved.
3. Trunks of members were ovoid or short, columnar and had an armour of leaf bases in cycadeoideaceae.
4. A part of the inflorescence remained partially embedded within a layer of leaf base in cycadeoideaceae.
Difference # Williamsoniaceae:
1. Williamsoniaceae is a family of more older and primitive members of Bennettitales.
2. Williamsoniaceae is preserved generally in the form of compressions.
3. Trunks of the representatives were slender and profusely branched in williamsoniaceae.
4. Inflorescence was stalked or sessile in williamsoniaceae.