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https://hdl.handle.net/1959.11/12994
Title: | The Cambrian trilobite 'Rhyssometopus', with taxonomic revision of Guzhangian species from Queensland, Australia | Contributor(s): | Hally, Lee Ann (author) | Publication Date: | 2011 | Handle Link: | https://hdl.handle.net/1959.11/12994 | Abstract: | A morphometric (bivariate) analysis of middle Cambrian (Series 3; Guzhangian) species of the trilobite 'Rhyssometopus' from north-western Queensland is conducted. Results show that the species 'Rhyssometopus rhyssometopus' Öpik, 1967, 'R. princeps' Öpik, 1967, 'R. rugiceps' Öpik, 1967, and 'R. neuter' Öpik, 1967 cannot be differentiated on the basis of linear dimensions previously used by Öpik (1967) as diagnostic characters. Nonlinear characters are found to be more reliable for differentiating the species of 'Rhyssometopus'. The type species, 'R. rhyssometopus', is herein considered a senior subjective synonym of 'R. princeps' and 'R. rugiceps'. The erection of the subgenus 'Rostrifinis' is also found to be unwarranted. The occurrence of all 'Rhyssometopus' species from Australia, Antarctica and China is reviewed, and a taxonomic revision provides emended diagnoses for the following valid species: 'R. rhyssometopus' Öpik, 1967, 'R. neuter' Öpik, 1967, 'R. nitidus' Duan, 2004, 'R. rostrifinis' Öpik, 1967, 'R. thielei' (Chapman, 1911), and 'R. zhongguoensis' Zhou, 1977. The family Rhyssometopidae is also discussed, with membership consisting of the following genera: 'Rhyssometopus', 'Plectrifer', 'Qiandongaspis' and 'Tasmana'. | Publication Type: | Journal Article | Source of Publication: | Memoirs of the Association of Australasian Palaeontologists, v.42, p. 175-191 | Publisher: | Geological Society of Australia Inc | Place of Publication: | Australia | ISSN: | 0810-8889 2205-8877 |
Fields of Research (FoR) 2008: | 040308 Palaeontology (incl Palynology) 060301 Animal Systematics and Taxonomy |
Socio-Economic Objective (SEO) 2008: | 970104 Expanding Knowledge in the Earth Sciences 970106 Expanding Knowledge in the Biological Sciences |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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