Heliocanthus and Rioarribasuchus: Difference between pages

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Redirect: Rioarribasuchus has been used by William Parker and other Triassic animal workers, who concede that they overlooked the Lucas et al. 2006 paper when they first had access to Parker 2007 paper
 
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{{Italic title}}
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{{Automatic taxobox
{{Automatic taxobox
| name = ''Heliocanthus''
| name = ''Rioarribasuchus''
| fossil_range = [[Late Triassic]]
| fossil_range = [[Late Triassic]]
| authority = Parker, 2007
| authority = Lucas, Hunt, and Spielmann, 2006
| subdivision_ranks = [[Species]]
| subdivision_ranks = [[Species]]
| subdivision =
| subdivision =
* {{extinct}}'''''H. chamaensis''''' <small>Parker, 2007</small>
* {{extinct}}'''''R. chamaensis''''' <small>(Zeigler, Heckert, and Lucas, 2003)</small>
}}
}}


'''''Heliocanthus''''' is the name of a problematic [[genus]] of [[aetosaur]] that has undergone many [[Taxonomy (biology)|taxonomic]] revisions in recent years, and may prove to be [[synonym (taxonomy)|synonymous]] with '''''Rioarribasuchus'''''. [[Fossil]]s have been found from the [[Chinle Formation]] in [[Arizona]] and [[New Mexico]] that date back to the upper Late [[Carnian]] stage of the [[Late Triassic]].
'''''Rioarribasuchus''''' is a [[genus]] of [[aetosaur]]. [[Fossil]]s have been found from the [[Chinle Formation]] in [[Arizona]] and [[New Mexico]] that date back to the upper Late [[Carnian]] stage of the [[Late Triassic]].


==History==
==History==
The name ''Heliocanthus'' was first used as a generic replacement name for the aetosaur ''"[[Desmatosuchus]]" chamaensis'', named in 2003 and found from the [[Petrified Forest National Park|Petrified Forest Member]] of the Chinle Formation in New Mexico.<ref>Zeigler, K. A., Heckert, A. B., and Lucas, S. G. (2003). A new species of ''Desmatosuchus'' (Archosauria:Aetosauria) from the Upper Triassic of the Chama Basin, north-central New Mexico. ''In:'' Heckert, A. B. and Lucas, S. G., eds., ''Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin No. 21''</ref><ref>Parker, W. G. (2003). Description of a new specimen of ''Desmatosuchus haplocerus'' from the Late Triassic of Northern Arizona. Unpublished MS thesis. Northern Arizona University, Flagstaff. 315 pp.</ref> It was suggested to be more closely related to ''[[Paratypothorax]]''. However, this new generic name was first proposed in an unpublished thesis, and thus did not meet [[International Code of Zoological Nomenclature|ICZN]] regulations for the naming of a new taxon. Later published papers reasserted the genetic separation of ''"D". chamaensis'' from ''Desmatosuchus'', but the name ''Heliocanthus'' remained a ''[[nomen nudum]]'' until 2007, where it was thoroughly rediscribed in a paper published by the ''[[Journal of Systematic Palaeontology]]''.<ref>Parker, W. G. (2007). Reassessment of the Aetosaur ''"Desmatosuchus" chamaensis'' with a reanalysis of the phylogeny of the Aetosauria (Archosauria:Pseudosuchia). ''Journal of Systematic Palaeontology'' '''5''':41–68.</ref> However, a paper previously published in late 2006 assigned ''"D". chamaensis'' to the new genus ''Rioarribasuchus''.<ref>Lucas, S. G., Hunt, A. P., and Spielmann, J. A. (2006). ''Rioarribasuchus'', a new name for an aetosaur from the Upper Triassic of north-central New Mexico. ''In:'' Harris et al., eds., ''The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37''.</ref> As a result, ''Heliocanthus'' can be considered a junior synonym of ''Rioarribasuchus'' because the genus has seniority over ''Heliocanthus''. However, the name ''Rioarribasuchus'' has been viewed as a violation of the code of ethics laid out in Appendix A of the International Code of Zoological Nomenclature and the papers that made use of the name have even been described as practicing "intellectual theft".<ref>http://www.miketaylor.org.uk/dino/nm/timeline.html</ref> An article published later in 2007 in the science blog ''Tetropod Zoology'' brought these events to the attention of a wider range of readers, and the controversy was dubbed "Aetogate".<ref>http://scienceblogs.com/tetrapodzoology/2007/04/post_2.php</ref> This sparked continued debate regarding these issues among vertebrate paleontologists, which eventually led to an investigation by the [[Society of Vertebrate Paleontology]] into these issues and a response given in mid 2008 regarding the unethical conduct of the authors who described ''Rioarribasuchus''.<ref>http://www.vertpaleo.org/society/documents/ExecutiveCommitteestatement.pdf</ref>
''"[[Desmatosuchus]]" chamaensis'' was named in 2003 and found from the [[Petrified Forest National Park|Petrified Forest Member]] of the Chinle Formation in New Mexico.<ref>Zeigler, K. A., Heckert, A. B., and Lucas, S. G. (2003). A new species of ''Desmatosuchus'' (Archosauria:Aetosauria) from the Upper Triassic of the Chama Basin, north-central New Mexico. ''In:'' Heckert, A. B. and Lucas, S. G., eds., ''Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin No. 21''</ref><ref>Parker, W. G. (2003). Description of a new specimen of ''Desmatosuchus haplocerus'' from the Late Triassic of Northern Arizona. Unpublished MS thesis. Northern Arizona University, Flagstaff. 315 pp.</ref> It was suggested to be more closely related to ''[[Paratypothorax]]'', and so Parker gave it the name ''Heliocanthus''. However, this new generic name was first proposed in an unpublished thesis, and thus did not meet [[International Code of Zoological Nomenclature|ICZN]] regulations for the naming of a new taxon. Later published papers reasserted the genetic separation of ''"D". chamaensis'' from ''Desmatosuchus'', but the name ''Heliocanthus'' remained a ''[[nomen nudum]]'' until 2007, where it was thoroughly rediscribed in a paper published by the ''[[Journal of Systematic Palaeontology]]''.<ref>Parker, W. G. (2007). Reassessment of the Aetosaur ''"Desmatosuchus" chamaensis'' with a reanalysis of the phylogeny of the Aetosauria (Archosauria:Pseudosuchia). ''Journal of Systematic Palaeontology'' '''5''':41–68.</ref> However, a paper previously published in late 2006 assigned ''"D". chamaensis'' to the new genus ''Rioarribasuchus''.<ref>Lucas, S. G., Hunt, A. P., and Spielmann, J. A. (2006). ''Rioarribasuchus'', a new name for an aetosaur from the Upper Triassic of north-central New Mexico. ''In:'' Harris et al., eds., ''The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37''.</ref> As a result, ''Heliocanthus'' is a junior objective synonym of ''Rioarribasuchus'' because the genus has seniority over ''Heliocanthus''. However, the name ''Rioarribasuchus'' has been viewed as a violation of the code of ethics laid out in Appendix A of the International Code of Zoological Nomenclature and the papers that made use of the name have even been described as practicing "intellectual theft".<ref>http://www.miketaylor.org.uk/dino/nm/timeline.html</ref> An article published later in 2007 in the science blog ''Tetropod Zoology'' brought these events to the attention of a wider range of readers, and the controversy was dubbed "Aetogate".<ref>http://scienceblogs.com/tetrapodzoology/2007/04/post_2.php</ref> This sparked continued debate regarding these issues among vertebrate paleontologists, which eventually led to an investigation by the [[Society of Vertebrate Paleontology]] into these issues and a response given in mid 2008 regarding the unethical conduct of the authors who described ''Rioarribasuchus''.<ref>http://www.vertpaleo.org/society/documents/ExecutiveCommitteestatement.pdf</ref>


==References==
==References==
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==External links==
==External links==
*[http://scienceblogs.com/tetrapodzoology/2007/04/post_2.php Tetrapod Zoology article explaining the taxonomic issues regarding ''Heliocanthus'']
*[http://scienceblogs.com/tetrapodzoology/2007/04/post_2.php Tetrapod Zoology article explaining the taxonomic issues regarding ''Rioarribasuchus'']
*[http://www.vertpaleo.org/society/documents/ExecutiveCommitteestatement.pdf PDF response given by the Society of Vertebrate Paleontology regarding the issues surrounding the naming and use of ''Rioarribasuchus'']
*[http://www.vertpaleo.org/society/documents/ExecutiveCommitteestatement.pdf PDF response given by the Society of Vertebrate Paleontology regarding the issues surrounding the naming and use of ''Rioarribasuchus'']
*[http://www.miketaylor.org.uk/dino/nm/timeline.html A timeline of publications and letters by Aetogate]
*[http://www.miketaylor.org.uk/dino/nm/timeline.html A timeline of publications and letters by Aetogate]

Revision as of 16:44, 22 January 2016

Rioarribasuchus
Temporal range: Late Triassic
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Order: †Aetosauria
Family: †Stagonolepididae
Tribe: †Paratypothoracini
Genus: †Rioarribasuchus
Lucas, Hunt, and Spielmann, 2006
Species
  • †R. chamaensis (Zeigler, Heckert, and Lucas, 2003)

Rioarribasuchus is a genus of aetosaur. Fossils have been found from the Chinle Formation in Arizona and New Mexico that date back to the upper Late Carnian stage of the Late Triassic.

History

"Desmatosuchus" chamaensis was named in 2003 and found from the Petrified Forest Member of the Chinle Formation in New Mexico.[1][2] It was suggested to be more closely related to Paratypothorax, and so Parker gave it the name Heliocanthus. However, this new generic name was first proposed in an unpublished thesis, and thus did not meet ICZN regulations for the naming of a new taxon. Later published papers reasserted the genetic separation of "D". chamaensis from Desmatosuchus, but the name Heliocanthus remained a nomen nudum until 2007, where it was thoroughly rediscribed in a paper published by the Journal of Systematic Palaeontology.[3] However, a paper previously published in late 2006 assigned "D". chamaensis to the new genus Rioarribasuchus.[4] As a result, Heliocanthus is a junior objective synonym of Rioarribasuchus because the genus has seniority over Heliocanthus. However, the name Rioarribasuchus has been viewed as a violation of the code of ethics laid out in Appendix A of the International Code of Zoological Nomenclature and the papers that made use of the name have even been described as practicing "intellectual theft".[5] An article published later in 2007 in the science blog Tetropod Zoology brought these events to the attention of a wider range of readers, and the controversy was dubbed "Aetogate".[6] This sparked continued debate regarding these issues among vertebrate paleontologists, which eventually led to an investigation by the Society of Vertebrate Paleontology into these issues and a response given in mid 2008 regarding the unethical conduct of the authors who described Rioarribasuchus.[7]

References

  1. ^ Zeigler, K. A., Heckert, A. B., and Lucas, S. G. (2003). A new species of Desmatosuchus (Archosauria:Aetosauria) from the Upper Triassic of the Chama Basin, north-central New Mexico. In: Heckert, A. B. and Lucas, S. G., eds., Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin No. 21
  2. ^ Parker, W. G. (2003). Description of a new specimen of Desmatosuchus haplocerus from the Late Triassic of Northern Arizona. Unpublished MS thesis. Northern Arizona University, Flagstaff. 315 pp.
  3. ^ Parker, W. G. (2007). Reassessment of the Aetosaur "Desmatosuchus" chamaensis with a reanalysis of the phylogeny of the Aetosauria (Archosauria:Pseudosuchia). Journal of Systematic Palaeontology 5:41–68.
  4. ^ Lucas, S. G., Hunt, A. P., and Spielmann, J. A. (2006). Rioarribasuchus, a new name for an aetosaur from the Upper Triassic of north-central New Mexico. In: Harris et al., eds., The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37.
  5. ^ http://www.miketaylor.org.uk/dino/nm/timeline.html
  6. ^ http://scienceblogs.com/tetrapodzoology/2007/04/post_2.php
  7. ^ http://www.vertpaleo.org/society/documents/ExecutiveCommitteestatement.pdf

External links

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