Explore this animal in Size of Extinct Animals ↗
445 / Mesozoic
Koskinonodon
Koskinonodon perfectum
A broad half-meter skull carried grooves that sensed water movement.
View original image · 1600 × 1067- Time range
- About 227–208 million years ago
- Final stage
- Late Triassic
- Geographic range
- Seasonal rivers and ponds · North America
01 / DEFINITION & ECOLOGY
What was Koskinonodon?
Koskinonodon (Koskinonodon perfectum) was an extinct organism known from About 227–208 million years ago, with a range in Seasonal rivers and ponds · North America.
Life and ecology
It ambushed fish in seasonal waterways and may have concentrated in deep pools during drought.
02 / DISAPPEARANCE
Why did Koskinonodon disappear?
Its record ends about 208 million years ago, before the end-Triassic crisis. Changing Late Triassic waterways are possible context, not a demonstrated cause.
03 / EVIDENCE
How do scientists know about Koskinonodon?
Skulls, bone beds and postcranial remains record populations and growth.
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