Explore this animal in Size of Extinct Animals ↗
458 / Mesozoic
Nanuqsaurus
Nanuqsaurus hoglundi
It hunted through polar night, though its supposedly dwarf size remains uncertain.
View original image · 1600 × 1067- Time range
- About 70 million years ago
- Final stage
- Late Cretaceous
- Geographic range
- High-latitude forest · Alaska
01 / DEFINITION & ECOLOGY
What was Nanuqsaurus?
Nanuqsaurus (Nanuqsaurus hoglundi) was an extinct organism known from About 70 million years ago, with a range in High-latitude forest · Alaska.
Life and ecology
This tyrannosaurid tracked hadrosaurs and other Arctic dinosaurs and may have had insulating covering.
02 / DISAPPEARANCE
Why did Nanuqsaurus disappear?
Its record, about 70 million years old, does not establish survival to the impact about 66 million years ago; the fate of non-avian dinosaurs as a group cannot replace species-specific evidence.
03 / EVIDENCE
How do scientists know about Nanuqsaurus?
Skull and jaw pieces establish affinity; size and feathering remain cautious.
04 / SOURCES & FURTHER READING
Check the source record
Use the scientific name to compare taxonomy, occurrence records and the fossil record. Database coverage and classifications may differ.
05 / REVISION HISTORY
How has this record changed?
- Removed an extinction cause that credited a mass extinction occurring after this species' last dated record.
- Verified authoritative entity sources and added three responsive reconstruction sizes.
- Initial bilingual species record published.
06 / CORRECTIONS & ADDITIONS