Montlivaltiidae Dietrich, 1926
Thecosmilia bassanii
Thecosmilia cartieri
Thecosmilia complanata
Thecosmilia cumanensis
Thecosmilia dichotoma
Thecosmilia furcata
Thecosmilia gresslyi
Thecosmilia guerreroensis
Thecosmilia jaccardi
Thecosmilia langi
Thecosmilia magna
Thecosmilia martini
Thecosmilia moraviensis
Thecosmilia oaxaquensis
Thecosmilia pinguis
Thecosmilia qingyanensis
Thecosmilia rofanica
Thecosmilia rutogensis
Thecosmilia tibetana
Thecosmilia tobleri
Thecosmilia trichotoma
Thecosmilia virgulina
Thecosmilia vurguni
Thecosmilia zagaliensis
