| Heilongjiangosaurus Temporal range: Late Cretaceous | |
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| illustration of Heilongjiangosaurus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Sauropsida |
| clade: | Dinosauria |
| Order: | Saurischia |
| Suborder: | Ornithopoda |
| Family: | †Lambeosaurinae]] |
| Genus: | †Deinocheirus Li & Jin, 2001 |
| Species: | †H. jiayinensis |
| Binomial name | |
| †Heilongjiangosaurus jiayinensis Li & Jin, 2001 | |
"Heilongjiangosaurus" (meaning "Heilongjiang Province lizard") is the informal name given to an as-yet undescribed genus of hadrosaurid dinosaur from the Late Cretaceous. It possibly was a lambeosaurine, and may in fact be the same animal as Charonosaurus. The fossils were found in Maastrichtian-age rocks in Heilongjiang, China. As a nomen nudum, we cannot be certain of what it is supposed to be, but there also appears to be a connection to an obscure species called Mandschurosaurus jiayinensis, named in 1983.
The "type species" is "Heilongjiangosaurus jiayinensis", and it was coined in 2001 in a faunal list by Li and Jin.