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163 / Precambrian
Charnia
Charnia masoni
A featherlike body of repeating branches was anchored by a disc in deep water, yet it had neither chlorophyll nor a mouth.
Structured expansion · editorial review pending
- Time range
- About 574–560 million years ago
- Final stage
- Ediacaran
- Geographic range
- Deep seafloors · Present-day England, Canada and Russia
01 / ANSWER FIRST
What was Charnia?
This archive records Charnia under the scientific name Charnia masoni, with an age of About 574–560 million years ago and a range of Deep seafloors · Present-day England, Canada and Russia. A featherlike body of repeating branches was anchored by a disc in deep water, yet it had neither chlorophyll nor a mouth.
Charnia was a rangeomorph whose fractal branches repeatedly subdivided to create a vast exchange surface. It lived too deep for photosynthesis and may have taken dissolved or suspended nutrients from seawater.
02 / QUICK FACTS
Charnia at a glance
- Scientific name
- Charnia masoni
- Age
- About 574–560 million years ago
- Last recorded stage
- Ediacaran
- Known range
- Deep seafloors · Present-day England, Canada and Russia
- Broad group
- invertebrate
- Archive era
- Precambrian
- Habitat signals
- Ocean
- Documented regions
- Asia · Europe · North America
03 / ANATOMY
How was Charnia built?
Overall body plan
A featherlike body of repeating branches was anchored by a disc in deep water, yet it had neither chlorophyll nor a mouth.
Body symmetry and segmentation
The available record is interpreted through preserved proportions, attachment surfaces, wear and comparison with related organisms. For Charnia, those observations must be separated from features added only for visual reconstruction.
Feeding and locomotor structures
Charnia was a rangeomorph whose fractal branches repeatedly subdivided to create a vast exchange surface. It lived too deep for photosynthesis and may have taken dissolved or suspended nutrients from seawater.
Growth and individual variation
A single specimen does not define the whole species. Size, maturity, preservation and possible sex differences are considered before anatomical traits are treated as typical of Charnia.
04 / DIET & BEHAVIOUR
How did Charnia live?
Charnia was a rangeomorph whose fractal branches repeatedly subdivided to create a vast exchange surface. It lived too deep for photosynthesis and may have taken dissolved or suspended nutrients from seawater. This ecological reconstruction is strongest where anatomy, associated organisms and the depositional setting point in the same direction.
05 / DIET & BEHAVIOUR
What shaped its ecological limits?
Its populations depended on substrate, water chemistry, food supply and ecological competition. Changes in any one factor did not necessarily cause immediate extinction, but interacting pressures could reduce range, recruitment and resilience.
06 / RANGE & HABITAT
Where and when did Charnia live?
This archive currently lists About 574–560 million years ago; Deep seafloors · Present-day England, Canada and Russia. Fossil or historical occurrence data describe where evidence has been found, not every place the taxon once occupied. Species-level age and range limits still require source-specific review.
Documented geographic range
Deep seafloors · Present-day England, Canada and Russia. This boundary can change when specimens are reidentified or new localities are published.
Time window
About 574–560 million years ago, with the final recorded stage listed as Ediacaran. Rock units and dating uncertainty mean the true biological range may extend beyond the known record.
Environmental setting
The archive uses the broad habitat labels Ocean. These labels help explore related records; a habitat reconstruction requires evidence from individual localities.
07 / FOSSIL EVIDENCE
What evidence supports reconstructions of Charnia?
Primary record
Casts from Charnwood Forest, Mistaken Point and the White Sea preserve holdfast discs, central axes and multilevel branching, while ash beds constrain age.
Comparative anatomy
Preserved structures are compared with close and functionally similar organisms. The method can constrain posture and function, but analogy alone cannot prove colour, behaviour or soft tissue.
Age and locality
Stratigraphy and occurrence records place Charnia within About 574–560 million years ago and Deep seafloors · Present-day England, Canada and Russia. Reworked fossils and uncertain provenance are treated cautiously.
Open entity records
Links below connect the archive to available taxonomic and occurrence records. A matching name does not verify every ecological claim, and related-taxon links provide comparison rather than an exact species match.
08 / DISAPPEARANCE & DEBATE
Why did Charnia disappear?
Changes in seafloor chemistry, sedimentation and animal activity ended the stable deep-water ecosystems that supported rangeomorphs.
The last fossil or observation marks the youngest evidence currently known, not necessarily the death of the final individual. Explanations are strongest when timing, environmental change and population biology agree; otherwise the profile preserves uncertainty instead of assigning a single dramatic cause.
09 / FREQUENTLY ASKED QUESTIONS
Charnia FAQ
What was Charnia?
This archive records Charnia under the scientific name Charnia masoni, with an age of About 574–560 million years ago. A featherlike body of repeating branches was anchored by a disc in deep water, yet it had neither chlorophyll nor a mouth.
When did Charnia live?
The current archive range is About 574–560 million years ago; its youngest recorded stage is Ediacaran.
Where was Charnia found?
The archive currently lists Deep seafloors · Present-day England, Canada and Russia. Species-level locality assignments and the full geographic range still require source-specific review.
How do scientists know about Charnia?
Casts from Charnwood Forest, Mistaken Point and the White Sea preserve holdfast discs, central axes and multilevel branching, while ash beds constrain age.
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?
- Completed an AI-assisted bilingual audit of the archive record, corrected identified issues and clarified evidence limits; independent editorial review is pending.
- Expanded into a structured bilingual profile with anatomy, ecology, range, evidence, debate and FAQs; independent editorial review is pending.
- Verified authoritative entity sources and added three responsive reconstruction sizes.
- Initial bilingual species record published.
06 / CORRECTIONS & ADDITIONS