H

"Hadrosauravus" (N.N.) Lambert, 1990=Gryposaurus latidens
Hadrosaurus (N.D.) Leidy, 1858
    type species: H. foulkii (N.D.) Leidy, 1858
    other species: H. agilis Marsh, 1872=Claosaurus agilis
                          H. navajovius (Brown, 1910 (originally Kritosaurus))=Kritosaurus navajovius
                          H. minor (N.D.) Colbert, 1948="H." minor Marsh
                          H. notabilis (Lambe, 1914 (originally Gryposaurus))=Gryposaurus notabilis
                          H. notabilis Horner, 1979=?Gryposaurus notabilis
                          H. triops Cope, 1869=nondinosaurian (Pliocene whale)
                          "H." breviceps (N.D.) Marsh, 1889>Hadrosauridae incertae sedis
                          "H." cavatus (N.D.) Cope, 1871>Hadrosauridae incertae sedis
                          "H." minor (N.D.) Marsh, 1870>Hadrosauridae incertae sedis                          
                          "H." paucidens (N.D.) Marsh, 1889>Lambeosaurinae incertae sedis
Hagryphus Zanno and Sampson, 2005
    type species: H. giganteus Zanno and Sampson, 2005
Halticosaurus (N.D.) Huene, 1907-08
    type species: H. longotarsus (N.D.) Huene, 1907-08
    other species: H. liliensterni Huene, 1934=Liliensternus liliensterni
                          H. orbitoangulatus Huene, 1932=sphenosuchian crocodylomorph
Hanssuesia Sullivan, 2003
    type species: H. sternbergi (Brown and Schlaikjer, 1943 (originally Troodon))
"Hanwulosaurus" (N.N.) Anonymous, 2001
Haplocanthosaurus Hatcher, 1903
    type species: H. priscus (Hatcher, 1903 (originally Haplocanthus))
    other species: H. delfsi McIntosh and Williams, 1988
                         H. utterbacki Hatcher, 1903=H. priscus
Haplocanthus Hatcher, 1903\Agassiz, 1833-44=Haplocanthosaurus
   "type species" "H." priscus Hatcher, 1903=Haplocanthosaurus priscus
Harpymimus Barsbold and Perle, 1984
    type species: H. okladnikovi Barsbold and Perle, 1984
Hecatosaurus Brown, 1910=Telmatosaurus
   type species: H. transsylvanicus (Nopcsa, 1900 (originally Limnosaurus))=Telmatosaurus transsylvanicus
"Heilongjiangosaurus" (N.N.) Li and Jin, 2001=Charonosaurus
    "type species": "H. jiayinensis" (N.N.) Li and Jin, 2001=Charonosaurus jiayinensis
Heishansaurus (N.D.) Bohlin, 1953
    type species: H. pachycephalus (N.D.) Bohlin, 1953
Helopus Wiman, 1929\Wagler, 1832=Euhelopus
   "type species": "H." zdanskyi Wiman, 1929=Euhelopus zdanskyi
Heptasteornis (N.D.) Harrison and Walker, 1975
   type species: H. andrewsi (N.D.) Harrison and Walker, 1975
Herrerasaurus Reig, 1963
    type species: H. ischigualastensis Reig, 1963
Hespersaurus Carpenter, Miles, and Cloward, 2001
    type species: H. mjosi Carpenter et. al, 2001
Heterodontosaurus Crompton and Charig, 1962
    type species: H. tucki Crompton and Charig, 1962
Heterosaurus Cornuel, 1850=?Mantellisaurus
   type species: H. neocomiensis Cornuel, 1850=?Mantellisaurus atherfieldensis
Hexinlusaurus Barrett, Butler, and Knoll
    type species: H. multidens (He and Cai, 1983 (originally Yandusaurus))
Heyuannia Lu, 2002
    type species: H. huangi, Lu, 2002
Hierosaurus (N.D.) Wieland, 1909
    type species: H. sternbergi (N.D.) Wieland, 1909
    other species: H. coleii Mehl, 1936=Niobrarasaurus coleii
Hikanodon Keferstein, 1834=Iguanodon
"Hironosaurus" (N.N.) Hisa, 1988
"Hisanohamasaurus" (N.N.) Lambert, 1990
Histriasaurus (?N.D.) Dalla Vecchia, 1998
    type species: H. boscarollii (?N.D.) Dalla Vecchia, 1998
Homalocephale Maryanska and Osmólska, 1974
    type species: H. calathocercos Maryanska and Osmólska, 1974
"Honghesaurus" (N.N.) Anonyomous, 1981=Yandusaurus
Hongshanosaurus You, Xu, and Wang, 2003
    type species: H. houi You et al., 2003
Hoplitosaurus Lucas, 1902
    type species: H. marshi (Lucas, 1901 (originally Stegosaurus))
Hoplosaurus (N.D.) Seeley, 1881=?Struthiosaurus
    type species: H. ischyrus (N.D.) Seeley, 1881=?Struthiosaurus transilvanicus
Hortalotarsus (N.D.) Seeley, 1894
   type species: H. skirtopodus (N.D.) Seeley, 1894
Huabeisaurus Pang and Cheng, 2000
   type species: H. allocotus Pang and Cheng, 2000
Huanghetitan You, H., Li, D., Zhou, L., and Ji, Q., 2006
    type species: H. liujiaxiensis You, H. et al., 2006
    other species: H. ruyangensis Lu J., Xu, L., Zhang, X., Hu, W., Wu, Y., Jia, S., and Ji, Q., 2007
Huaxiagnathus Kwang, Norell, Qiang, and Keqin, 2004
    type species: H. orientalis Kwang et al., 2004
"Huaxiasaurus" (N.N.)=Huaxiagnathus
Huayangosaurus Dong, Tang, and Zhou, 1982
    type species: H. taibaii Dong et al., 1982
Hudiesaurus Dong, 1997
    type species: H. sinojapanorum Dong, 1997
Hulsanpes Osmólska, 1982
    type species: H. perlei Osmólska, 1982
Hungarosaurus Ősi, 2005
    type species: H. tormani Ősi, 2005
"Hunhosaurus" (N.N.) Dong, Zhou, and Zhang, 1983=Yandusaurus
Hylaeosaurus Mantell, 1833
    type species: H. armatus Mantell, 1833
    other species: H. northamptoni (?N.D.) (Mantell, 1848 (originally Regnosaurus))=Regnosaurus northamptoni
                         H. oweni Mantell, 1844=H. armatus
Hylosaurus Fitzinger, 1843=Hylaeosaurus
   type species: H. mantelli Fitzinger, 1843=Hylaeosaurus armatus
Hypacrosaurus Brown, 1913
    type species: H. altispinus Brown, 1913
    other species: H. stebingeri Horner and Currie, 1994
                         H. casuarius (Brown, 1914 (originally Corythosaurus))=Corythosaurus casuarius
                         H. lambei (Parks, 1923 (originally Lambeosaurus))=Lambeosaurus lambei
                         H. laticaudus (Morris, 1981 (originally Lambeosaurus))=Lambeosaurus laticaudus
                         H. magnicristatus (Sternberg, 1935 (originally Lambeosaurus))=Lambeosaurus magnicristatus
Hypselosaurus (N.D.) Matheron, 1869
    type species: H. priscus (N.D.) Matherton, 1869
Hypsibema (N.D.) Cope, 1869
    type species: H. crassicauda (N.D.) Cope, 1869
    other species: H. missouriensis (N.D.) (Gilmore and Stewart, 1945 (originally Neosaurus))="Neosaurus" missouriensis
Hypsilophodon Huxley, 1869
    type species: H. foxii Huxley, 1869
    other species: "H." wielandi (N.D.) Galton and Jensen, 1979>Ornithopoda incertae sedis      
Hypsirophus Cope, 1878
   type species: H. discurus Cope, 1878
   other species: H. seeleyanus (N.D.) Cope, 1879=Stegosaurus armatus