Temporal range:
Reconstruction of Ottoia prolifica.
The anterior portion of Ottoia, illustrating annulation and the eversible proboscis. From Smith et al. (2015)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Stem group: Priapulida (?)
Family: Ottoiidae
Walcott, 1911
Genus: Ottoia
Walcott, 1911
  • O. prolifica Walcott, 1911 (type)
  • O. tricuspida Smith et al., 2015[1]

Ottoia is a stem-group archaeopriapulid worm known from Cambrian fossils.[3] Although priapulid-like worms from various Cambrian deposits are often referred to Ottoia on spurious grounds, the only clear Ottoia macrofossils come from the Burgess Shale of British Columbia, which was deposited 508 million years ago.[1] Microfossils extend the record of Ottoia throughout the Western Canada Sedimentary Basin, from the mid- to late- Cambrian.[1] A few fossil finds are also known from China.[4]

  1. ^ a b c d Smith, M. R.; Harvey, T. H. P.; Butterfield, N. J. (2015). "The macro- and microfossil record of the Cambrian priapulid Ottoia" (PDF). Palaeontology. 58 (4): 705–721. doi:10.1111/pala.12168.
  2. ^ Smith MR, Harvey THP, Butterfield NJ(2015) Data from: The macro- and microfossil record of the middle Cambrian priapulid Ottoia. Dryad Digital Repository. doi:10.5061/dryad.km109
  3. ^ Budd, G. E.; Jensen, S. (2000). "A critical reappraisal of the fossil record of the bilaterian phyla". Biological Reviews of the Cambridge Philosophical Society. 75 (2): 253–95. doi:10.1111/j.1469-185X.1999.tb00046.x. PMID 10881389. S2CID 39772232.
  4. ^ "Miaobanpo section (Orytocephalus indicus zone) - Kaili Fm (Cambrian of China)". PBDB.

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