Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications

Morphometrics can be an important tool in systematic studies, providing taxonomists with strong elements of quantification and formal hypothesis testing. Here, these tools are tested for the trilobite Leptoplastides marianus (Hoek) which was originally described on the basis of three deformed specim...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Monti, D.S.
Formato: JOUR
Materias:
geometric morphometrics
Leptoplastides
Olenidae
Ordovician
traditional morphometrics
Tremadocian
geometry
hypothesis testing
morphology
morphometry
morphotype
taxonomy
trilobite
type specimen
Argentina
Bolivia
Tarija [Bolivia]
Trilobita
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14772019_v16_n3_p179_Monti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_14772019_v16_n3_p179_Monti
record_format dspace
spelling todo:paper_14772019_v16_n3_p179_Monti2023-10-03T16:19:10Z Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications Monti, D.S. geometric morphometrics Leptoplastides Olenidae Ordovician traditional morphometrics Tremadocian geometry hypothesis testing morphology morphometry morphotype taxonomy Tremadocian trilobite type specimen Argentina Bolivia Tarija [Bolivia] Olenidae Trilobita Morphometrics can be an important tool in systematic studies, providing taxonomists with strong elements of quantification and formal hypothesis testing. Here, these tools are tested for the trilobite Leptoplastides marianus (Hoek) which was originally described on the basis of three deformed specimens from west Tarija, Bolivia. Following the conclusions of Harrington & Leanza, a wide range of morphological variation is accepted for this species, and the name was applied to a large number of specimens from north-western Argentina. Based on specimens collected from the quebrada Moya (Huacalera, Jujuy), as well as on material in the Harrington & Leanza collections in the University of Buenos Aires, traditional morphometric and geometric morphometric methods were used to evaluate the variation of the cranidial shape of L. marianus sensu Harrington & Leanza. The results allow discrimination between two clearly different morphotypes. The name L. marianus should be restricted to the type specimens, given the deformation of these materials. In addition, L. argentinensis and L. granulosus are both valid names for the two morphotypes recognized in the present paper. © 2017, © The Trustees of the Natural History Museum, London 2017. All rights reserved. Fil:Monti, D.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14772019_v16_n3_p179_Monti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic geometric morphometrics
Leptoplastides
Olenidae
Ordovician
traditional morphometrics
Tremadocian
geometry
hypothesis testing
morphology
morphometry
morphotype
taxonomy
Tremadocian
trilobite
type specimen
Argentina
Bolivia
Tarija [Bolivia]
Olenidae
Trilobita
spellingShingle geometric morphometrics
Leptoplastides
Olenidae
Ordovician
traditional morphometrics
Tremadocian
geometry
hypothesis testing
morphology
morphometry
morphotype
taxonomy
Tremadocian
trilobite
type specimen
Argentina
Bolivia
Tarija [Bolivia]
Olenidae
Trilobita
Monti, D.S.
Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications
topic_facet geometric morphometrics
Leptoplastides
Olenidae
Ordovician
traditional morphometrics
Tremadocian
geometry
hypothesis testing
morphology
morphometry
morphotype
taxonomy
Tremadocian
trilobite
type specimen
Argentina
Bolivia
Tarija [Bolivia]
Olenidae
Trilobita
description Morphometrics can be an important tool in systematic studies, providing taxonomists with strong elements of quantification and formal hypothesis testing. Here, these tools are tested for the trilobite Leptoplastides marianus (Hoek) which was originally described on the basis of three deformed specimens from west Tarija, Bolivia. Following the conclusions of Harrington & Leanza, a wide range of morphological variation is accepted for this species, and the name was applied to a large number of specimens from north-western Argentina. Based on specimens collected from the quebrada Moya (Huacalera, Jujuy), as well as on material in the Harrington & Leanza collections in the University of Buenos Aires, traditional morphometric and geometric morphometric methods were used to evaluate the variation of the cranidial shape of L. marianus sensu Harrington & Leanza. The results allow discrimination between two clearly different morphotypes. The name L. marianus should be restricted to the type specimens, given the deformation of these materials. In addition, L. argentinensis and L. granulosus are both valid names for the two morphotypes recognized in the present paper. © 2017, © The Trustees of the Natural History Museum, London 2017. All rights reserved.
format JOUR
author Monti, D.S.
author_facet Monti, D.S.
author_sort Monti, D.S.
title Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications
title_short Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications
title_full Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications
title_fullStr Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications
title_full_unstemmed Morphometrics of Leptoplastides marianus (Hoek) (Trilobita, Olenidae) from the Tremadocian of north-western Argentina: taxonomic implications
title_sort morphometrics of leptoplastides marianus (hoek) (trilobita, olenidae) from the tremadocian of north-western argentina: taxonomic implications
url http://hdl.handle.net/20.500.12110/paper_14772019_v16_n3_p179_Monti
work_keys_str_mv AT montids morphometricsofleptoplastidesmarianushoektrilobitaolenidaefromthetremadocianofnorthwesternargentinataxonomicimplications
_version_ 1782030004647886848

Ejemplares similares