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Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp. Abstract: Revision of the paleoflora of Cerro La Brea (Early Jurassic), Mendoza province, Argentina. At Cerro La Brea locality, on the southern margin of Atuel river, Mendoza province, El Freno Formation is made up of more than 300 metres of siliciclastic sediments conforming an asymmetrical anticline. During data gathering of a detailed profile the existence of five plantiferous levels was determined; one of them corresponding to that identified by Ugarte in his doctoral thesis. In this contribution the study of its paleoflora is provided with the description of a floral assemblage characterising each of the plantiferous levels. In this unit different facies associations can be recognized, this enabling us to interpret the whole as originated in a mixed-load fluvial system. The paleobotanical study refers to sampled material as well as that collected by Ugarte. Systematic revision made possible to recognize a floral assemblage for Cerro La Brea including 14 taxa: Equisetites sp., Marattia münsteri (Goeppert) Zeiller, Cladophlebis ugartei Herbst, Cladophlebis antarctica Nathorst in Halle, Cladophlebis oblonga Halle, Dictyophyllum atuelense Herbst, Archangelskya proto-loxsoma (Kurtz) Herbst, Elatocladus conferta (Oldham & Morris) Halle, Taeniopteris sp., cf. Rienitsia colliveri Herbst, Scleropteris vincei Herbst, Ptilophyllum acutifolium Morris, Otozamites hislopi (Oldham) Feistmantel and Williamsonia sp.

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