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307 / Precambrian
Ourasphaira
Ourasphaira giraldae
Branching spherical microfossils may push the fungal record toward one billion years.
- Time range
- About 1.0–0.89 billion years ago
- Final stage
- Neoproterozoic
- Geographic range
- Estuarine or shallow-water sediment · Arctic Canada
01 / DEFINITION & ECOLOGY
What was Ourasphaira?
Ourasphaira (Ourasphaira giraldae) was an extinct organism known from About 1.0–0.89 billion years ago, with a range in Estuarine or shallow-water sediment · Arctic Canada.
Life and ecology
Ourasphaira has double-walled cells and filaments interpreted as a possible early fungus.
02 / DISAPPEARANCE
Why did Ourasphaira disappear?
The morphology lacks a continuous younger record and its affinity remains under study.
03 / EVIDENCE
How do scientists know about Ourasphaira?
Organic-walled microfossils show budding and branching, but the fungal identity is an interpretation.
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