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522 / Paleozoic
Doryaspis
Doryaspis nathorsti
A spear-like rostrum and lateral horns projected from this jawless armored fish.
- Time range
- About 410–395 million years ago
- Final stage
- Early Devonian
- Geographic range
- Delta and shallow sea · Svalbard
01 / DEFINITION & ECOLOGY
What was Doryaspis?
Doryaspis (Doryaspis nathorsti) was an extinct organism known from About 410–395 million years ago, with a range in Delta and shallow sea · Svalbard.
Life and ecology
It moved close to the bottom and used a ventral mouth to gather particles and tiny animals.
02 / DISAPPEARANCE
Why did Doryaspis disappear?
Jawed-fish expansion and shallow-water change reduced heterostracans.
03 / EVIDENCE
How do scientists know about Doryaspis?
Armor and body impressions constrain rostrum, gill openings and fin folds.
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