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414 / Paleozoic
Yuknessia
Yuknessia simplex
Simple narrow blades radiated from a common attachment.
- Time range
- About 508 million years ago
- Final stage
- Middle Cambrian
- Geographic range
- Shallow soft bottom · Canada
01 / DEFINITION & ECOLOGY
What was Yuknessia?
Yuknessia (Yuknessia simplex) was an extinct organism known from About 508 million years ago, with a range in Shallow soft bottom · Canada.
Life and ecology
This low algal tuft photosynthesized in shallow water and sheltered small animals.
02 / DISAPPEARANCE
Why did Yuknessia disappear?
Algal-community and preservation changes ended its record.
03 / EVIDENCE
How do scientists know about Yuknessia?
Carbon films preserve the base and blade bundle but not diagnostic cells.
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