Harpillaenus Whittington, 1963

H. rossi Fortey and Droser, 1999

Hedinaspis Troedsson, 1951

H. canadensis Chatterton & Ludvigsen, 1998

Hemirhodon Raymond, 1937

H. amplipyge

Hesslerides

H. arcentensis Brezinski, 2000 [?= “Phillipsia” sp. (Kelly Formation)]

Hillyardina Ross, 1951

H. semicylindrica Ross, 1951

Holmia

H. rowei Walcott

Holmiella

"Holmiella boweni"

Holteria Walcott, 1924b

H problematica Walcott, 1924b [Secret Canyon Shale, Eureka, Nevada]

Homagnostus Howell, 1935

H. obesus (Belt)
H. tumidosus (Hall and Whitfield)
H. sp. 1 of Chatterton & Ludvigsen, 1998

Housia Walcott, 1916

H. ovata Palmer, 1960
H. sp. [MacKay Group]

Hypagnostus Jaekel, 1909

H. parvifrons

Hyperbolochilus Ross, 1951

H. marginauctum Ross, 1951

Hypothetica Ross, 1951 [Hypothetica is a junior synonym of Entomaspis, fide ADRAIN 2003]

H. rawi Ross, 1951 [=Entomaspis rawi (Ross, 1951)]

Hystricurus Raymond, 1913

H. acumennasus Ross, 1951
H. contractus Ross, 1951
H. flectimembrus Ross, 1951
H. genalatus Ross, 1951
H. oculilunatus Ross, 1951
H. paragenalatus Ross, 1951
H. politus Ross, 1951
H. robustus Ross, 1951
H. sp. A Ross, 1951
H. sp. B Ross, 1951
H.? sp. C Ross, 1951
H. sp. D Ross, 1951
H.? sp. E Ross, 1951
H.? sp. F Ross, 1951
H.? sp. G Ross, 1951
H.? sp. H Ross, 1951
H.? aff. H.? genacurus (Hintze) (Manitou Fm.)