Species X. canadensis Rank Genus | Scientific name Xanioascus canadensis | |
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Similar Ctenorhabdotus, Fasciculus, Sinoascus, Pollingeria, Worthenella | ||
Xanioascus canadensis is an extinct ctenophore, known from the Canadian Burgess Shale in British Columbia. 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.
Other important Cambrian ctenophore fossils are Fasciculus vesanus and Ctenorhabdotus capulus.
References
Xanioascus Wikipedia(Text) CC BY-SA