Stanleycaris

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Stanleycaris
Temporal range: Miaolingian
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20210518 Radiodonta frontal appendage Stanleycaris hirpex.png
Frontal appendages of Stanleycaris hirpex
Scientific classification edit
Kingdom: Animalia
Phylum: Arthropoda
Class: †Dinocaridida
Order: †Radiodonta
Family: †Hurdiidae
Genus: †Stanleycaris
Species:
†S. hirpex
Binomial name
†Stanleycaris hirpex
Pates, Daley & Ortega-Hernández (2018)

Stanleycaris is an extinct, monotypic genus of hurdiid radiodont which existed in Canada, during the middle Cambrian (Miaolingian). The type species is Stanleycaris hirpex. Stanleycaris was described from the Stephen Formation near the Stanley Glacier Burgess Shale locality[1] and also informally reported from Odaray Mountain.[2]

The original description of the taxon appeared in an online supplement to the article published by Jean-Bernard Caron, Robert R. Gaines, M. Gabriela Mángano, Michael Streng and Allison C. Daley in 2010.[1] That description did not satisfy of the requirements of the International Code of Zoological Nomenclature, as the Code did not accept taxa named in electronic publications as validly named until 2012;[3] the name was eventually validated by Pates, Daley & Ortega-Hernández (2018).[4]

Oral cone of Stanleycaris hirpex

Its one- to three-centimetre-long frontal appendages are the most commonly found component, and comprise 14 podomeres with a row of robust, mostly forked spines (gnathites) on their upper surface, and five long, curved blades (endites) protruding from the ventral surface.[5] A tetraradial oral cone sometimes associated with the appendages; these have 28 plates instead of 32 like those of other hurdiid genera.[5] One specimen also appears to include an associated Hurdia-like carapace.[1]

Putative lobopodian species Aysheaia prolata from the Cambrian Wheeler Formation (Utah, United States) was reinterpreted as an isolated frontal appendage of a member of the genus Stanleycaris by Pates, Daley & Ortega-Hernández (2017).[6]

Etymology[]

Its generic name means "Crab of Stanley Glacier"; hirpex, L. "large rake", reflects the rake-like nature of its spiny appendages.[1]

References[]

  1. ^ a b c d Caron, J. -B.; Gaines, R. R.; Mangano, M. G.; Streng, M.; Daley, A. C. (2010). "A new Burgess Shale-type assemblage from the "thin" Stephen Formation of the southern Canadian Rockies". Geology. 38 (9): 811. Bibcode:2010Geo....38..811C. doi:10.1130/G31080.1.
  2. ^ "Burgess-shale-sites-provide-scientists-with-new-finds". Rocky Mountain Outlook.
  3. ^ José A. Gámez Vintaned; Andrey Y. Zhuravlev (2018). "Comment on "Aysheaia prolata from the Utah Wheeler Formation (Drumian, Cambrian) is a frontal appendage of the radiodontan Stanleycaris" by Stephen Pates, Allison C. Daley, and Javier Ortega-Hernández". Acta Palaeontologica Polonica. 63 (1): 103–104. doi:10.4202/app.00335.2017 (inactive 31 October 2021).{{cite journal}}: CS1 maint: DOI inactive as of October 2021 (link)
  4. ^ Stephen Pates; Allison C. Daley; Javier Ortega-Hernández (2018). "Reply to Comment on "Aysheaia prolata from the Utah Wheeler Formation (Drumian, Cambrian) is a frontal appendage of the radiodontan Stanleycaris" with the formal description of Stanleycaris". Acta Palaeontologica Polonica. 63 (1): 105–110. doi:10.4202/app.00443.2017.
  5. ^ a b Moysiuk, Joseph; Caron, Jean-Bernard (2021). "Exceptional multifunctionality in the feeding apparatus of a mid-Cambrian radiodont". Paleobiology. 47 (4): 704–724. doi:10.1017/pab.2021.19. ISSN 0094-8373. S2CID 236552819.
  6. ^ Stephen Pates; Allison C. Daley; Javier Ortega-Hernández (2017). "Aysheaia prolata from the Utah Wheeler Formation (Drumian, Cambrian) is a frontal appendage of the radiodontan Stanleycaris". Acta Palaeontologica Polonica. 62 (3): 619–625. doi:10.4202/app.00361.2017.

External links[]


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