Explore this animal in Size of Extinct Animals ↗
444 / Mesozoic
Cyclotosaurus
Cyclotosaurus robustus
Closed otic notches and a broad flat skull marked a giant aquatic ambush predator.
View original image · 1600 × 1067- Time range
- About 225 million years ago
- Final stage
- Late Triassic
- Geographic range
- Rivers and lakes · Germany
01 / DEFINITION & ECOLOGY
What was Cyclotosaurus?
Cyclotosaurus (Cyclotosaurus robustus) was an extinct organism known from About 225 million years ago, with a range in Rivers and lakes · Germany.
Life and ecology
It waited on river and lake bottoms for fish and animals near shore.
02 / DISAPPEARANCE
Why did Cyclotosaurus disappear?
Its record, about 225 million years old, predates the end-Triassic crisis by more than 20 million years. The specific cause of its disappearance is not established.
03 / EVIDENCE
How do scientists know about Cyclotosaurus?
Skulls, jaws and partial skeletons constrain its bite and body.
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