Journal article

A restudy of Utahcaris orion (Euarthropoda) from the Spence Shale (Middle Cambrian, Utah, USA)

Abstract:: Utahcaris orion Conway Morris & Robison, 1988, from the lower middle Cambrian (Series 3, Stage 5) Spence Shale Member situated in Utah, USA, is redescribed based on a restudy of the original material. Newly recognized features, including ventral lateral eyes, trunk appendages, and a bulbous cephalic shield with subtriangular extension, reinforce similarities with Sanctacaris uncata from the middle Cambrian Burgess Shale. Both are assigned to the new family, Sanctacarididae. Sanctacaridids represent the oldest chelicerates. Their ecology and that of their nearest non-chelicerate relatives indicate that Chelicerata were plesiomorphically predatory.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Legg, D., & Pates, S. (2016). A restudy of Utahcaris orion (Euarthropoda) from the Spence Shale (Middle Cambrian, Utah, USA). Geological Magazine, 154(1), 181–186.

MLA Style

Legg, D., and S. Pates. “A Restudy of Utahcaris Orion (Euarthropoda) from the Spence Shale (Middle Cambrian, Utah, USA).” Geological Magazine, vol. 154, no. 1, Cambridge University Press, 2016, pp. 181–86.

Chicago Style

Legg, D, and S Pates. 2016. “A Restudy of Utahcaris Orion (Euarthropoda) from the Spence Shale (Middle Cambrian, Utah, USA).” Geological Magazine 154 (1): 181–86.
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Publisher copy:: 10.1017/S0016756816000789

Authors

+ Legg, D More by this author

Institution:: University of Oxford
Division:: GLAM
Department:: Natural History Museum
Role:: Author

+ Pates, S More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Zoology
Role:: Author

Publisher:: Cambridge University Press
Journal:: Geological Magazine More from this journal
Volume:: 154
Issue:: 1
Pages:: 181-186
Publication date:: 2016-08-31
Acceptance date:: 2016-07-18
DOI:: 10.1017/S0016756816000789
EISSN:: 1469-5081
ISSN:: 0016-7568

Keywords:: Langston Formation

Sidneyia

Chelicerata

ambush predation

Wellsville Mountains
Pubs id:: pubs:643854
UUID:: uuid:cdb9c90b-81ee-4687-a4cc-3de3874d685a
Local pid:: pubs:643854
Source identifiers:: 643854
Deposit date:: 2017-06-15

Terms of use

Copyright holder:: © Cambridge University Press 2016
Copyright date:: 2016

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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