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432 / Paleozoic
Isoxys
Isoxys curvirostratus
A spined bivalved shell enclosed a large-eyed swimming predator.
- Time range
- About 518–505 million years ago
- Final stage
- Middle Cambrian
- Geographic range
- Shallow marine water column · China and Canada
01 / DEFINITION & ECOLOGY
What was Isoxys?
Isoxys (Isoxys curvirostratus) was an extinct organism known from About 518–505 million years ago, with a range in Shallow marine water column · China and Canada.
Life and ecology
Isoxys hunted tiny prey above the seafloor with grasping frontal limbs and acute vision.
02 / DISAPPEARANCE
Why did Isoxys disappear?
Cambrian arthropod turnover removed the species.
03 / EVIDENCE
How do scientists know about Isoxys?
Chengjiang and Burgess Shale fossils preserve eyes, limbs, gills and digestive glands.
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