- Triquitrites trigonoappendix
- Triquitrites trigonus
- Triquitrites tripartitus
- Triquitrites tripertitus
- Triquitrites tripunctatus
- Triquitrites triqurgidus
- Triquitrites trisulcus
- Triquitrites triturgidus
- Triquitrites trivalvis
- Triquitrites trivialis
- Triquitrites truncatus
- Triquitrites truncospinatus
- Triquitrites tumulosus
- Triquitrites tumulus
- Triquitrites turgidus
- Triquitrites type A Hoff.et al,1955
- Triquitrites valvaetus
- Triquitrites variabilis
- Triquitrites variabilus
- Triquitrites velensis
- Triquitrites ventriosus
- Triquitrites verrucosus
- Triquitrites vesiculatus
- Triquitrites vetustus
- Triradiate sp
- Triradiate spores
- Triradiatosporites adriennis
- Triradiatosporites caelatus
- Triradiatosporites marxheimensis
- Triradiatosporites neddenii
- Triradiatosporites primarius
- Triradiatosporites solidus
- Triradiatus
- Triradisporites adriennis
- Triradisporites caelatus
- Triradisporites neddenii
- Triradites
- Triradites spinulosus
- Triremisporites
- Triremisporites bolchovitinae
- Triremisporites delcourtii
- Triremisporites feronensis
- Triremisporites latifolius
- Triremisporites minor
- Triremisporites rasilis