Cornalatus
(tree size 4)
Ceuthauxus
(tree size 9)
Aceratophallus
(tree size 14)
Pararhachistes
(tree size 6)
Rhachidomorpha
(tree size 9)
Neoleptodesmus
(tree size 13)
Unculabes
(tree size 6)
Curodesmus
(tree size 2)
Strongylodesmus
(tree size 7)
Chromodesmus
(tree size 5)
Rachidomorpha
(tree size 4)
Acutangulus
(tree size 5)
Rhachodesmus
(tree size 3)
Metaphallus
(tree size 1)
Diuncustoma
(tree size 1)
Mexidesmus
(tree size 1)
Sakophallus
(tree size 1)
Tancitares
(tree size 1)
Teinorhachis
(tree size 1)
Tiphallus
(tree size 3)
Microrhachis
(tree size 2)
Rachis saussure, 1859
(tree size 3)
Rhachis