- Taiwanaster mai (WANG, 1984)
- Taprhopygus truncatus
- Temnholectypus transpecosensis (CRAGIN, 1893)
- Temnocidaris sp. (Maastrichtiense)
- Temnocidaris (Hirudocidaris) cf. corbaricus (LAMBERT, 1909)
- Temnocidaris (Stereocidaris) aff. intermedia (WILTSHITE, in WRIGHT, 1868)
- Temnocidaris (Stereocidaris) malum (ALBIN GRAS, 1848)
- Temnocidaris (Stereocidaris) sp. - Coniaciense
- Temnocidaris (Stereocidaris) subvesiculosa (D'ORBIGNY, 1850)
- Temnocidaris (Temnocidaris) baylei (COTTEAU, 1863)
- Tetraromania jaccardi (DESOR, 1869)
- Tetraromania sp.
- Thagastea luciani (DE LORIOL, 1880)
- Thagastea wetterlei (POMEL, 1888)
- Tithonia convexa (CATULLO, 1827)
- Toxaster argilaceus (D'ORBIGNY, 1853)
- Toxaster (Miotoxaster) seynensis (LAMBERT, 1920)
- Trachyaster almerae (COTTEAU, 1890)
- Trachyaster (Gregoryaster?) heberti (COTTEAU, 1890)
- Trachyaster trutati (COTTEAU, 1889)
- Trachypatagus cf. tuberculatus (WRIGHT, 1864)
- Tripneustes parkinsoni (AGASSIZ, 1841)
- Trochalosoma gourdoni (COTTEAU, 1889)
- Trochotiara rotulare (AGASSIZ, 1836)
- Trochotiara trigeri (COTTEAU, 1860)
- Tylocidaris (Tylocidaris) clavigera (MANTELL, 1822)
- Tylocidaris (Sardocidaris) trempinus (GALLEMI & SMITH, 1999)