View original imageThis is an original generative reconstruction, not a photograph or scientific plate.
161 / Precambrian
Dickinsonia
Dickinsonia costata
Its flat oval body moved across microbial mats like a rhythmically quilted cushion, leaving feeding traces behind.
Structured expansion · editorial review pending
- Time range
- About 558–550 million years ago
- Final stage
- Late Ediacaran
- Geographic range
- Shallow Ediacaran seafloors · Present-day Australia and Russia
01 / ANSWER FIRST
What was Dickinsonia?
This archive records Dickinsonia under the scientific name Dickinsonia costata, with an age of About 558–550 million years ago and a range of Shallow Ediacaran seafloors · Present-day Australia and Russia. Its flat oval body moved across microbial mats like a rhythmically quilted cushion, leaving feeding traces behind.
Dickinsonia has no clear mouth, gut or hard parts. Offset units met along a midline, and the animal may have absorbed nutrients while creeping across microbial mats on largely undisturbed seafloors.
02 / QUICK FACTS
Dickinsonia at a glance
- Scientific name
- Dickinsonia costata
- Age
- About 558–550 million years ago
- Last recorded stage
- Late Ediacaran
- Known range
- Shallow Ediacaran seafloors · Present-day Australia and Russia
- Broad group
- invertebrate
- Archive era
- Precambrian
- Habitat signals
- Ocean
- Documented regions
- Asia · Oceania
03 / ANATOMY
How was Dickinsonia built?
Overall body plan
Its flat oval body moved across microbial mats like a rhythmically quilted cushion, leaving feeding traces behind.
Body symmetry and segmentation
The available record is interpreted through preserved proportions, attachment surfaces, wear and comparison with related organisms. For Dickinsonia, those observations must be separated from features added only for visual reconstruction.
Feeding and locomotor structures
Dickinsonia has no clear mouth, gut or hard parts. Offset units met along a midline, and the animal may have absorbed nutrients while creeping across microbial mats on largely undisturbed seafloors.
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 Dickinsonia.
04 / DIET & BEHAVIOUR
How did Dickinsonia live?
Dickinsonia has no clear mouth, gut or hard parts. Offset units met along a midline, and the animal may have absorbed nutrients while creeping across microbial mats on largely undisturbed seafloors. 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 Dickinsonia live?
This archive currently lists About 558–550 million years ago; Shallow Ediacaran seafloors · Present-day Australia 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
Shallow Ediacaran seafloors · Present-day Australia and Russia. This boundary can change when specimens are reidentified or new localities are published.
Time window
About 558–550 million years ago, with the final recorded stage listed as Late 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 Dickinsonia?
Primary record
Australian and White Sea impressions preserve growth and movement; cholesterol-like biomarkers in fossil films support an animal identity.
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 Dickinsonia within About 558–550 million years ago and Shallow Ediacaran seafloors · Present-day Australia 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 Dickinsonia disappear?
Seafloor reorganization, changing oxygen and the rise of active burrowers may have compressed the ecological space of Ediacaran mat dwellers.
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
Dickinsonia FAQ
What was Dickinsonia?
This archive records Dickinsonia under the scientific name Dickinsonia costata, with an age of About 558–550 million years ago. Its flat oval body moved across microbial mats like a rhythmically quilted cushion, leaving feeding traces behind.
When did Dickinsonia live?
The current archive range is About 558–550 million years ago; its youngest recorded stage is Late Ediacaran.
Where was Dickinsonia found?
The archive currently lists Shallow Ediacaran seafloors · Present-day Australia and Russia. Species-level locality assignments and the full geographic range still require source-specific review.
How do scientists know about Dickinsonia?
Australian and White Sea impressions preserve growth and movement; cholesterol-like biomarkers in fossil films support an animal identity.
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