Thyone aurantiaca Costa, 1869 – synonym of Thyone inermis
Thyone elegans Norman, 1865 – synonym of Thyone inermis
Thyone elongata Düben and Koren, 1846 – synonym of Leptopentacta elongata
Thyone flexus Hodge, 1867 – synonym of Thyone fusus
Thyone portlocki Forbes, 1841 – synonym of Thyonidium drummondii
Thyone poucheti Barrois, 1882 – synonym of Pseudothyone raphanus
Thyone raphanus Düben & Koren, 1846 – synonym of Pseudothyone raphanus
Thyone subvillosa Hérouard, 1890 – synonym of Thyone fusus
Thyonidium dübeni Norman, 1869 – synonym of Thyonidium drummondii
Thyonidium hyalinum Forbes, 1841 – synonym of Thyonidium hyalinum
Toxopneustes droebachiensis O.F. Müller, 1776 – synonym of Strongylocentrotus droebachiensis
Toxopneustes pictus Norman, 18?65 – synonym of Strongylocentrotus droebachiensis