Dinosaurs That Start With H

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Explore a complete list of over 41 dinosaurs that start with the letter H.

Each dinosaur listed has a dedicated page with information on classification, diet, size, fossil evidence, geographic distribution, and maps of known fossil locations, where available. Pages may also include size comparison charts, fossil representations, and in-depth descriptions based on current scientific research.

The amount of information varies by species, depending on the completeness of fossil discoveries.

Hadrosaurus

Diet: Herbivore.Size: Uncertain due to a severe lack of remains.Time Period: Campanian of the Cretaceous.

Haestasaurus

Diet: Herbivore.Size: Uncertain due to lack of fossil remains,‭ ‬however,‭ ‬humerus is recorded as being‭ ‬59.9‭ ‬centimetres long,‭ ‬ulna,‭ ‬42.1‭ ‬centimetres long and radius‭ ‬40.4‭ ‬centimetres long.‭ ‬Using more complete genera such as Camarasaurus results in a reconstructed length of about 6.5 meters long,‭ ‬though this is just a best guess.Time Period: Late Berriasian of the Cretaceous.

Hagryphus

Diet: Omnivore‭?Size: Uncertain due to the fact that the holotype specimen is a single hand which is about‭ ‬30‭ ‬centimetres long.‭ ‬Assuming that this hand is scaled to the same approximate body proportions as other related oviraptorids,‭ ‬then the holotype individual of Hagryphus might be about‭ ‬3‭ ‬meters long.Time Period: Campanian of the Cretaceous.

Halszkaraptor

Diet: Piscivore‭?Size: Skull to sacrum length‭ = ‬45‭ ‬centimetres.Time Period: Campanian‭? ‬of the Cretaceous.

Halticosaurus

Diet: ‭C‬arnivore.Size: Roughly estimated to be about 5.5 meters long.Time Period: Norian of the Triassic.

Hamititan

Diet: Herbivore.Size: Uncertain due to lack of fossil remains.Time Period: Aptian of the Cretaceous.

Hanssuesia

Diet: Herbivore.Size: Uncertain.Time Period: Campanian of the Cretaceous.

Haplocanthosaurus

Diet: Herbivore.Size: Known to be up to‭ ‬14.8‭ ‬meters long.Time Period: Kimmeridgian to Tithonian of the Jurassic.

Haplocheirus

Diet: Insectivore‭?Size: 2‭ ‬meters long.Time Period: Oxfordian of the Jurassic.

Harpymimus

Diet: Possibly omnivorous.Size: 2 meters long.Time Period: Albian of the Cretaceous.

Helioceratops

Diet: Herbivore.Size: 1.3‭ ‬meters long.Time Period: Aptian to Cenomanian of the Cretaceous.
Herrerasaurus

Herrerasaurus

Diet: ‭C‬arnivore.Size: ‬Largest known skull is up to‭ ‬56‭ ‬centimetres long, suggesting largest known individuals approached 5 to 6 meters long.Time Period: Ladinian to early Carnian of the Triassic.

Hesperornithoides

Diet: Carnivore.Size: Possibly up to‭ ‬1‭ ‬meter long for the holotype individual.Time Period: Tithonian of the Jurassic.

Hesperosaurus

Diet: Herbivore.Size: Estimated abount‭ 6‭ ‬ to 7 meters long.Time Period: Kimmeridgian/Tithonian of the Jurassic.

Heterodontosaurus

Diet: Herbivore/Omnivore‭?Size: At least 1.2 meters long. partial skull fossils from another individual that when scaled to more complete individuals indicate that some individuals of Heterodontosaurus may have grown larger at up to 1.75 meters.Time Period: Early Sinemurian of the Jurassic for South African fossils.‭ ‬Possibly as far back as the Norian of the Triassic,‭ ‬through to the Pleinsbachian of the Jurassic.‭ ‬See main text.

Hexinlusaurus

Diet: Herbivore.Size: Up to about ‬1.2‭ ‬meters long.Time Period: Bajocian of the Jurassic.

Heyuannia

Diet: Uncertain.Size: At least‭ ‬1.5‭ ‬meters long.Time Period: Maastrichtian of the Cretaceous.

Hippodraco

Diet: Herbivore.Size: Roughly about 4.5 meters long.Time Period: Barremian of the Cretaceous.

Histriasaurus

Diet: Herbivore.Size: Unavailable.Time Period: Late Hauterivian of the Cretaceous.

Homalocephale

Diet: Herbivore.Size: 1.5‭ to 1.8 ‬meters long.Time Period: Maastrichtian of the Cretaceous.

Hoplitosaurus

Diet: Herbivore.Size: Uncertain due to incomplete remains,‭ ‬but possibly up to‭ ‬1.2‭ ‬meters tall at the hips.Time Period: Barremian of the Cretaceous.

Horshamosaurus

Diet: Herbivore.Size: Roughly estimated at about‭ ‬5‭ ‬meters long.Time Period: Barremian of the Cretaceous.

Houornis

Diet: Insectivore/Carnivore‭?Size: Unavailable.Time Period: Aptian of the Cretaceous.

Huabeisaurus

Diet: Herbivore.Size: About‭ ‬20‭ ‬meters long.Time Period: Cenomanian to Campanian of the Cretaceous.

Hualianceratops

Diet: Herbivore.Size: Skull roughly estimated about‭ ‬24.5‭ ‬centimetres long.‭ ‬Total body length uncertain due to lack of remains.Time Period: Oxfordian of the Jurassic.