Xanioascus canadensis is an extinct ctenophore, known from the Burgess Shale in British Columbia, Canada. The species, which is about 515 to 505 million years old, had 24 comb rows - in contrast to all modern forms which have only 8.

Xanioascus
Temporal range: 515–505 Ma
Artist's reconstruction
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Ctenophora
Genus: Xanioascus
Conway Morris & Collins, 1996
Species:
X. canadensis
Binomial name
Xanioascus canadensis
Conway Morris & Collins, 1996

Other important Cambrian ctenophore fossils are Fasciculus vesanus and Ctenorhabdotus capulus.

References

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  • "Xanioascus canadensis". Burgess Shale Fossil Gallery. Virtual Museum of Canada. 2011. Archived from the original on 2020-11-12.