Invertebrate
Hallucigenia sparsa
Early reconstructions showed it upside down and mistook its tail for its head.
Hallucigenia seemed so strange that its first reconstructions placed the animal upside down.
Three stages. One companion.
Game artwork
AI-generated, stylized game illustrations. These designs and growth stages are imaginative, not scientific reconstructions.
Hallucigenia sparsa at a glance
- Diet
- Small food items from the seafloor
- Its body shape and mouth structures allow researchers to propose how it fed, but its exact diet remains unresolved.
- When it lived
- Cambrian
- Group
- Lobopodia
- Lobopodians
- Fossil locations
- Canada, China
- Places where fossils have been found
Beyond the game
The real Hallucigenia sparsa
It was a lobopodian with such unusual anatomy that early reconstructions placed it upside down. Its fossils help scientists study the evolution of panarthropods, the group that includes arthropods and velvet worms.
Early reconstructions put it upside down and confused the head with the tail. Re-examining those parts helped scientists understand this lobopodian and its place in the history of arthropods and velvet worms.
This grouping describes evolutionary relationships. Its members share ancestors; they do not form a chain in which one must turn into another.
Fossil discoveries
Selected fossil records · present-day map
Map references
Map: Natural Earth, public domain. Fossil records: linked collections and publications.A note on the science
Early reconstructions put it upside down and confused the head with the tail. Re-examining those parts helped scientists understand this lobopodian and its place in the history of arthropods and velvet worms.
Sources & text credits
Explore the references behind this profile.
- Hallucigenia
Wikipedia contributors · Spanish source
Educational text adapted and translated from this article by Wikipedia contributors. The revision link, when captured in the source catalogue, identifies the source version.
- Hallucigenia
Wikipedia contributors · English source
Educational text adapted and translated from this article by Wikipedia contributors. The revision link, when captured in the source catalogue, identifies the source version.
- Lobopodia
Wikipedia contributors · English source
Educational text adapted and translated from this article by Wikipedia contributors. The revision link, when captured in the source catalogue, identifies the source version.
Educational text adapted in English from the existing Wikipedia-backed Dinosgacha catalogue and linked articles by Wikipedia contributors.
Existing English translations have been selected and arranged for this encyclopedia. Repeated period and diet text is omitted where those fields already carry it. Unknown facts remain unfilled; unreviewed geological age phrases are omitted and period labels replace numerical ages.
The adapted educational text is available under CC BY-SA 4.0. This text license does not apply to the game illustrations.