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352 / Mesozoic
Koolasuchus
Koolasuchus cleelandi
A giant amphibian still occupied cold rivers where crocodyliforms were uncommon.
- Time range
- About 125–100 million years ago
- Final stage
- Early Cretaceous
- Geographic range
- High-latitude rivers and forests · Southeastern Australia
01 / DEFINITION & ECOLOGY
What was Koolasuchus?
Koolasuchus (Koolasuchus cleelandi) was an extinct organism known from About 125–100 million years ago, with a range in High-latitude rivers and forests · Southeastern Australia.
Life and ecology
This late-surviving temnospondyl used a broad head, short limbs and strong tail to ambush fish.
02 / DISAPPEARANCE
Why did Koolasuchus disappear?
Warming climates and freshwater-predator turnover may have narrowed its habitat.
03 / EVIDENCE
How do scientists know about Koolasuchus?
Jaws, vertebrae and skull fragments constrain its size and affinity, while the full outline is comparative.
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?
- Verified authoritative entity sources and added three responsive reconstruction sizes.
- Initial bilingual species record published.
06 / CORRECTIONS & ADDITIONS