Juliana Sterli | Museo Paleontológico Egidio Feruglio (original) (raw)
Papers by Juliana Sterli
Acta Palaeontologica Polonica, 2007
Biology Letters, Mar 10, 2008
Acta Zoologica, Dec 22, 2010
Revista de la Asociación Geológica Argentina, Dec 1, 2008
Contributions to zoology, Sep 24, 2010
Acta Palaeontologica Polonica, 2019
Publicación Electrónica de la Asociación Paleontológica Argentina
Publicación Electrónica de la Asociación Paleontológica Argentina
Publicación Electrónica de la Asociación Paleontológica Argentina, 2021
Swiss Journal of Palaeontology, 2021
Over the last 25 years, researchers, mostly paleontologists, have developed a system of rank-free... more Over the last 25 years, researchers, mostly paleontologists, have developed a system of rank-free, phylogenetically defined names for the primary clades of turtles. As these names are not considered established by the PhyloCode, the newly created nomenclatural system that governs the naming of clades, we take the opportunity to convert the vast majority of previously defined clade names for extinct and extant turtles into this new nomenclatural framework. Some previously defined names are converted with minor adjustments. We also define a number of new clade names to close apparent nomenclatural gaps. In total, we establish 113 clade names, of which 79 had already received phylogenetic definitions and 34 are new.
Background. Condorchelys antiqua is a stem turtle previously described from the Queso Rallado Loc... more Background. Condorchelys antiqua is a stem turtle previously described from the Queso Rallado Locality, Cañadón Asfalto Formation (Early-Middle Jurassic), Chubut, Argentina. In 2014 a skull (MPEF-PV 10900) and an articulated shell with associated postcranial remains (MPEF-PV 10884) of C. antiqua were discovered in the mentioned locality. Methods. The new specimens have been prepared by L. Reiner (technician at the Museo Egidio Feruglio) and then studied using the regular paleontological methodology (e.g., direct observations and under the microscope, photography, and drawings). The new data provided by these two specimens, plus some other isolated remains that were re-prepared, allowed us to score a 25% more of the characters of C. antiqua in the most complete up to date matrix for Mesozoic turtles. The matrix was build in Mesquite and analyzed under maximum parsimony in TNT. We performed two rounds of Tree Bisection Reconnection and calculated a strict consensus. Branch supports we...
Contributions to Zoology, 2020
Pan-Chelidae (Testudines, Pleurodira) is a group of side-necked turtles with a currently disjoint... more Pan-Chelidae (Testudines, Pleurodira) is a group of side-necked turtles with a currently disjointed distribution in South America and Australasia and characterized by two morphotypes: the long-necked and the short-necked chelids. Both geographic groups include both morphotypes, but different phylogenetic signals are obtained from morphological and molecular data, suggesting the monophyly of the long-necked chelids or the independent evolution of this trait in both groups. In this paper, we addressed this conflict by compiling and editing available molecular and morphological data for Pan-Chelidae, and performing phylogenetic and dating analyses over the individual and the combined datasets. Our total-evidence phylogenetic analysis recovered the clade Chelidae as monophyletic and as sister group of a clade of South American extinct chelids; furthermore Chelidae retained inside the classical molecular structure with the addition of extinct taxa in both the Australasian and the South A...
Los objetivos de la presente Tesis fueron estudiar la anatomía de las tortugas del Jurásico conti... more Los objetivos de la presente Tesis fueron estudiar la anatomía de las tortugas del Jurásico continental de Patagonia, establecer sus relaciones filogenéticas dentro del grupo y comparar los resultados con la paleogeografía de la época. Se conocen, hasta el momento, tres localidades en Patagonia con restos de tortugas continentales del Jurásico, todas ellas ubicadas en la provincia de Chubut en las cercanías de la villa de Cerro Cóndor. Dos localidades están ubicadas en afloramientos de la Formación Cañadón Asfalto (Queso Rallado y El Bagual), mientras que la tercera lo está en afloramientos de la Formación Cañadón Calcáreo (Estancia Dionide Mesa). Los restos más completos y diagnósticos se recuperaron de la localidad Queso Rallado y los mismos fueron identificados como una nueva especie, Condorchelys antiqua Sterli 2008, la cual presenta una combinación de caracteres plesiomórficos y apomórficos. Los restos hallados en las otras localidades son fragmentarios, lo cual no permite una ...
Royal Society open science, 2018
Pleurodires or side-necked turtles are today restricted to freshwater environments of South Ameri... more Pleurodires or side-necked turtles are today restricted to freshwater environments of South America, Africa-Madagascar and Australia, but in the past they were distributed much more broadly, being found also on Eurasia, India and North America, and marine environments. Two hypotheses were proposed to explain this distribution; in the first, vicariance would have shaped the current geographical distribution and, in the second, extinctions constrained a previously widespread distribution. Here, we aim to reconstruct pleurodiran biogeographic history and diversification patterns based on a new phylogenetic hypothesis recovered from the analysis of the largest morphological dataset yet compiled for the lineage, testing which biogeographical process prevailed during its evolutionary history. The resulting topology generally agrees with previous hypotheses of the group and shows that most diversification shifts were related to the exploration of new niches, e.g. littoral or marine radiati...
Acta Palaeontologica Polonica, 2017
Zoological Journal of the Linnean Society, 2017
Turtles are one of the least explored clades of reptiles with respect to palaeoneuroanatomy. Few ... more Turtles are one of the least explored clades of reptiles with respect to palaeoneuroanatomy. Few detailed descriptions of endocranial features such as the brain morphology or inner ear exist for ex ...
Papers in Palaeontology, 2016
Acta Palaeontologica Polonica, 2007
Biology Letters, Mar 10, 2008
Acta Zoologica, Dec 22, 2010
Revista de la Asociación Geológica Argentina, Dec 1, 2008
Contributions to zoology, Sep 24, 2010
Acta Palaeontologica Polonica, 2019
Publicación Electrónica de la Asociación Paleontológica Argentina
Publicación Electrónica de la Asociación Paleontológica Argentina
Publicación Electrónica de la Asociación Paleontológica Argentina, 2021
Swiss Journal of Palaeontology, 2021
Over the last 25 years, researchers, mostly paleontologists, have developed a system of rank-free... more Over the last 25 years, researchers, mostly paleontologists, have developed a system of rank-free, phylogenetically defined names for the primary clades of turtles. As these names are not considered established by the PhyloCode, the newly created nomenclatural system that governs the naming of clades, we take the opportunity to convert the vast majority of previously defined clade names for extinct and extant turtles into this new nomenclatural framework. Some previously defined names are converted with minor adjustments. We also define a number of new clade names to close apparent nomenclatural gaps. In total, we establish 113 clade names, of which 79 had already received phylogenetic definitions and 34 are new.
Background. Condorchelys antiqua is a stem turtle previously described from the Queso Rallado Loc... more Background. Condorchelys antiqua is a stem turtle previously described from the Queso Rallado Locality, Cañadón Asfalto Formation (Early-Middle Jurassic), Chubut, Argentina. In 2014 a skull (MPEF-PV 10900) and an articulated shell with associated postcranial remains (MPEF-PV 10884) of C. antiqua were discovered in the mentioned locality. Methods. The new specimens have been prepared by L. Reiner (technician at the Museo Egidio Feruglio) and then studied using the regular paleontological methodology (e.g., direct observations and under the microscope, photography, and drawings). The new data provided by these two specimens, plus some other isolated remains that were re-prepared, allowed us to score a 25% more of the characters of C. antiqua in the most complete up to date matrix for Mesozoic turtles. The matrix was build in Mesquite and analyzed under maximum parsimony in TNT. We performed two rounds of Tree Bisection Reconnection and calculated a strict consensus. Branch supports we...
Contributions to Zoology, 2020
Pan-Chelidae (Testudines, Pleurodira) is a group of side-necked turtles with a currently disjoint... more Pan-Chelidae (Testudines, Pleurodira) is a group of side-necked turtles with a currently disjointed distribution in South America and Australasia and characterized by two morphotypes: the long-necked and the short-necked chelids. Both geographic groups include both morphotypes, but different phylogenetic signals are obtained from morphological and molecular data, suggesting the monophyly of the long-necked chelids or the independent evolution of this trait in both groups. In this paper, we addressed this conflict by compiling and editing available molecular and morphological data for Pan-Chelidae, and performing phylogenetic and dating analyses over the individual and the combined datasets. Our total-evidence phylogenetic analysis recovered the clade Chelidae as monophyletic and as sister group of a clade of South American extinct chelids; furthermore Chelidae retained inside the classical molecular structure with the addition of extinct taxa in both the Australasian and the South A...
Los objetivos de la presente Tesis fueron estudiar la anatomía de las tortugas del Jurásico conti... more Los objetivos de la presente Tesis fueron estudiar la anatomía de las tortugas del Jurásico continental de Patagonia, establecer sus relaciones filogenéticas dentro del grupo y comparar los resultados con la paleogeografía de la época. Se conocen, hasta el momento, tres localidades en Patagonia con restos de tortugas continentales del Jurásico, todas ellas ubicadas en la provincia de Chubut en las cercanías de la villa de Cerro Cóndor. Dos localidades están ubicadas en afloramientos de la Formación Cañadón Asfalto (Queso Rallado y El Bagual), mientras que la tercera lo está en afloramientos de la Formación Cañadón Calcáreo (Estancia Dionide Mesa). Los restos más completos y diagnósticos se recuperaron de la localidad Queso Rallado y los mismos fueron identificados como una nueva especie, Condorchelys antiqua Sterli 2008, la cual presenta una combinación de caracteres plesiomórficos y apomórficos. Los restos hallados en las otras localidades son fragmentarios, lo cual no permite una ...
Royal Society open science, 2018
Pleurodires or side-necked turtles are today restricted to freshwater environments of South Ameri... more Pleurodires or side-necked turtles are today restricted to freshwater environments of South America, Africa-Madagascar and Australia, but in the past they were distributed much more broadly, being found also on Eurasia, India and North America, and marine environments. Two hypotheses were proposed to explain this distribution; in the first, vicariance would have shaped the current geographical distribution and, in the second, extinctions constrained a previously widespread distribution. Here, we aim to reconstruct pleurodiran biogeographic history and diversification patterns based on a new phylogenetic hypothesis recovered from the analysis of the largest morphological dataset yet compiled for the lineage, testing which biogeographical process prevailed during its evolutionary history. The resulting topology generally agrees with previous hypotheses of the group and shows that most diversification shifts were related to the exploration of new niches, e.g. littoral or marine radiati...
Acta Palaeontologica Polonica, 2017
Zoological Journal of the Linnean Society, 2017
Turtles are one of the least explored clades of reptiles with respect to palaeoneuroanatomy. Few ... more Turtles are one of the least explored clades of reptiles with respect to palaeoneuroanatomy. Few detailed descriptions of endocranial features such as the brain morphology or inner ear exist for ex ...
Papers in Palaeontology, 2016