PC_90_30_30_20 Carboniferous period
General information
Category
Status
This code is part of the latest version of Uniclass. Properties and characteristics v1.3, October 2024
Contains
No more codes below this point
Other items in this category
PC_90_30_30_30 Devonian period
PC_90_30_30_40 Silurian period
Publication history
Quick support links
General help
For help on how the Uniclass site works, browse our support
Consultation
Share your feedback on Uniclass improvements to ensure it works for you
Site feedback
Let us know how this site can work better for you
Technical support
Raise a support ticket if you're stuck
Still need help?
Click here to view further contact options including live chat, email and call