The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth

The recently described Manidens condorensis is one of the most completely known taxa of the family Heterodontosauridae from the southern landmasses. However, some dental aspects are not well known due to preservational problems in the type material. This contribution reports new isolated teeth found...

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Detalles Bibliográficos
Autores principales: Becerra, M.G., Pol, D., Marsicano, C.A., Rauhut, O.W.M.
Formato: INPR
Lenguaje:English
Materias:
heterodonty
Manidens condorensis
morphometrics
teeth
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_08912963_v_n_p_Becerra
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_08912963_v_n_p_Becerra
record_format dspace
spelling todo:paper_08912963_v_n_p_Becerra2023-10-03T15:41:19Z The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth Becerra, M.G. Pol, D. Marsicano, C.A. Rauhut, O.W.M. heterodonty Manidens condorensis morphometrics teeth The recently described Manidens condorensis is one of the most completely known taxa of the family Heterodontosauridae from the southern landmasses. However, some dental aspects are not well known due to preservational problems in the type material. This contribution reports new isolated teeth found in the Cañadón Asfalto Formation (Early-Middle Jurassic). These teeth are referred to Manidens condorensis based on the presence of autapomorphic characters of the unusual dentition of this taxon, such as the highly asymmetric tooth crowns and small crenulations on each denticles. The isolated crowns are well preserved and reveal the presence of undescribed and new autapomorphical features, including apical and basal wear facets on the occlusal surface of isolated crowns and a wear surface also in the caniniform tooth. We carried out statistical analyses (including morphogeometrical and discriminant analyses), using the holotype crowns as a morphological starting point, for characterising shape variation of the crowns along the toothrow and for identifying the position of isolated crowns. These analyses allow defining morphological regions within the postcaniniform toothrow and produce a metrically based discriminant function to predict the hypothetical position of future discoveries, providing a methodological framework that could be applied to other extinct heterodont dinosaurs. © 2013 Copyright Taylor and Francis Group, LLC. Fil:Becerra, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pol, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marsicano, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. INPR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08912963_v_n_p_Becerra
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language English
orig_language_str_mv English
topic heterodonty
Manidens condorensis
morphometrics
teeth
spellingShingle heterodonty
Manidens condorensis
morphometrics
teeth
Becerra, M.G.
Pol, D.
Marsicano, C.A.
Rauhut, O.W.M.
The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth
topic_facet heterodonty
Manidens condorensis
morphometrics
teeth
description The recently described Manidens condorensis is one of the most completely known taxa of the family Heterodontosauridae from the southern landmasses. However, some dental aspects are not well known due to preservational problems in the type material. This contribution reports new isolated teeth found in the Cañadón Asfalto Formation (Early-Middle Jurassic). These teeth are referred to Manidens condorensis based on the presence of autapomorphic characters of the unusual dentition of this taxon, such as the highly asymmetric tooth crowns and small crenulations on each denticles. The isolated crowns are well preserved and reveal the presence of undescribed and new autapomorphical features, including apical and basal wear facets on the occlusal surface of isolated crowns and a wear surface also in the caniniform tooth. We carried out statistical analyses (including morphogeometrical and discriminant analyses), using the holotype crowns as a morphological starting point, for characterising shape variation of the crowns along the toothrow and for identifying the position of isolated crowns. These analyses allow defining morphological regions within the postcaniniform toothrow and produce a metrically based discriminant function to predict the hypothetical position of future discoveries, providing a methodological framework that could be applied to other extinct heterodont dinosaurs. © 2013 Copyright Taylor and Francis Group, LLC.
format INPR
author Becerra, M.G.
Pol, D.
Marsicano, C.A.
Rauhut, O.W.M.
author_facet Becerra, M.G.
Pol, D.
Marsicano, C.A.
Rauhut, O.W.M.
author_sort Becerra, M.G.
title The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth
title_short The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth
title_full The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth
title_fullStr The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth
title_full_unstemmed The dentition of Manidens condorensis (Ornithischia; Heterodontosauridae) from the Jurassic Cañadón Asfalto Formation of Patagonia: Morphology, heterodonty and the use of statistical methods for identifying isolated teeth
title_sort dentition of manidens condorensis (ornithischia; heterodontosauridae) from the jurassic cañadón asfalto formation of patagonia: morphology, heterodonty and the use of statistical methods for identifying isolated teeth
url http://hdl.handle.net/20.500.12110/paper_08912963_v_n_p_Becerra
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