- Trudopollis type N
- Trudopollis type O
- Trudopollis variabilis
- Trudopollis varioreticulatus
- Trudopollis variverrucatus
- Trudopollis verruco-echinule
- Trudopollis volgaensis
- Truncatisphaeridium
- Truncatisphaeridium clevelandense
- Trunculumarium
- Trunculumarium revinium
- Trunculumarium sp
- Trunculumarium sp.1
- Trunculumarium sp.1 Veco.,1996
- Trunculumarium sp.A