1. From 310 million to 280 million years ago; warm climate; swampy land
   - Pennsylvanian, Pennsylvanian period, Upper Carboniferous period

Type of: geological period, period

Part of: Carboniferous, Carboniferous period

Encyclopedia: Upper Carboniferous

• tertian
• tertiary
• Tertiary period
• tertiary syphilis
• tertigravida
• tertium quid
• Tertry
• Tertullian
• Terylene
• terza rima
• terzetto
• TESL
• tesla
• Tesla coil
• TESOL
• tessella
• tessellate
• tessellated
• tessellation
• tessera
• tesseract
• Tessin
• tessitura
• test
• test ban