http://sedici.unlp.edu.ar:80/handle/10915/66830 2026-11-02T10:15:27Z 2026-11-02T10:15:27Z Zamuner, Alba Berta Artabe, Analía Emilia Eva http://sedici.unlp.edu.ar:80/handle/10915/199656 2026-10-05T20:17:39Z 1990-01-01T00:00:00Z

Articulo A new member of the family Pertaspermaceae townrow in the triassic of Argentina: the genus Scytophyllum Bornemann 1856 Revista del Museo de La Plata. Nueva serie; vol. 9, no. 54, sección Paleontología Se describen por primera vez para Argentina frondes asignables a la especie Scytophyllum neuburgianum Dobruskina 1969, Familia Peltaspermaceae. El material encontrado permitió realizar la reconstrucción de la fronde, así como inferencias filogenéticas deducibles a través de estudios de morfogénesis foliar. De esta manera, el género Scytophyllum pudo relacionarse evolutivamente con el género Lepidopteris Schimper. Las transformaciones de las pínnulas y pinnas intercalares, indican que los procesos de aceleración y retardación intervinieron en la evolución de estas frondes. Sobre estas bases se esbozó una semofilesis: Lepidopteris martinsii (Kurtze) Townrow - L. madagascariensis Carpentier em. Townrow - L. stormbergensis (Seward) Townrow - Scytophyllum.; Fronds assignable to the species Scytophyllum neuburgianum Dobruskina 1969 included in the Family Pertaspermaceae are described for the First time for Argentina. The material allowed the reconstruction of the frond and phylogenetic inferences through the study of foliar morphology and architecture are made. It is suggested that Scytophyllum could be related to the genus Lepidopteris Schimper. The transformation that followed the intercalar pinnules and pinnae, indicates that acceleration and retardation processes took place in these taxa. On these basis a semoplulesis was outlined: Lepidopteris martinsii (Kurtze) Townrow - L. madagascariensis Carpentier em. Townrow - L. stormbergensis (Seward) Townrow - Scytophyllmn.

1990-01-01T00:00:00Z Se describen por primera vez para Argentina frondes asignables a la especie Scytophyllum neuburgianum Dobruskina 1969, Familia Peltaspermaceae. El material encontrado permitió realizar la reconstrucción de la fronde, así como inferencias filogenéticas deducibles a través de estudios de morfogénesis foliar. De esta manera, el género Scytophyllum pudo relacionarse evolutivamente con el género Lepidopteris Schimper. Las transformaciones de las pínnulas y pinnas intercalares, indican que los procesos de aceleración y retardación intervinieron en la evolución de estas frondes. Sobre estas bases se esbozó una semofilesis: Lepidopteris martinsii (Kurtze) Townrow - L. madagascariensis Carpentier em. Townrow - L. stormbergensis (Seward) Townrow - Scytophyllum. Fronds assignable to the species Scytophyllum neuburgianum Dobruskina 1969 included in the Family Pertaspermaceae are described for the First time for Argentina. The material allowed the reconstruction of the frond and phylogenetic inferences through the study of foliar morphology and architecture are made. It is suggested that Scytophyllum could be related to the genus Lepidopteris Schimper. The transformation that followed the intercalar pinnules and pinnae, indicates that acceleration and retardation processes took place in these taxa. On these basis a semoplulesis was outlined: Lepidopteris martinsii (Kurtze) Townrow - L. madagascariensis Carpentier em. Townrow - L. stormbergensis (Seward) Townrow - Scytophyllmn. Verzi, Diego Héctor Lezcano, Maximiliano http://sedici.unlp.edu.ar:80/handle/10915/66831 2019-11-18T20:03:20Z 1996-01-01T00:00:00Z

Articulo Systematic status and age of "Megactenomys" Kraglievich Rusconi. 1930 (Rodentia. Octodontidae) Revista del Museo de La Plata | Sección Paleontología; tomo 9, no. 60 A new cranial remain ol' a largc Ctcnomyinae from ihe Enscnadan (Earlv-Middle Plcistocene) ofthe Nccochea cliffs betwcen Costa Bonita and Puerto Quequcn (Buenos Aires Province), is describcd. The remain is assigncd to "Megactenomys'’ kraglievichi Rusconi, 1930. The revisión ofthe characters preserved in the holotype. and thc additional information given by the new material, demónstrate that this speeies is related to the extant tuco-tucos, so that it is transferred to the genus Ctenomys.

1996-01-01T00:00:00Z A new cranial remain ol' a largc Ctcnomyinae from ihe Enscnadan (Earlv-Middle Plcistocene) ofthe Nccochea cliffs betwcen Costa Bonita and Puerto Quequcn (Buenos Aires Province), is describcd. The remain is assigncd to "Megactenomys'’ kraglievichi Rusconi, 1930. The revisión ofthe characters preserved in the holotype. and thc additional information given by the new material, demónstrate that this speeies is related to the extant tuco-tucos, so that it is transferred to the genus Ctenomys. Pardiñas, Ulyses Francisco José http://sedici.unlp.edu.ar:80/handle/10915/66829 2022-09-23T17:47:46Z 2000-01-01T00:00:00Z

Articulo Revista del Museo de La Plata; tomo IX, no. 61, sección Paleontología The systematic siatas of three spocies of the Muridae froin the Quatemary oí the Pampean Región (Argentina), previously menlioned and illusirated by Ameghino( 1889). iselarified Afieranew study of the original rcinains. malcriáis referred lo: (I) Plyxxophurus elefttmx. (2) O.xynmterux ¡mpexux. and (3) Holochilux vulpinas, wcre determinad as 11) Reithradon uti rilas. (2) Grtuwiyx grixenflavux. and (3) Hotnchitus brasitiensis, rcspcctivcly. Other remains attributed hy Ameghino to the species Nécmmys conifer, Habrothrix internas and Calomys binan uluius bul nnt illusirated by him. are studied. All the new determinations proposed Itere are documented by deseriptions. figures, and ineasuremenls. Finally, a synthesis of the taxonomía status of the murid species menlioned or nominated by Ameghino in several works. are given.

2000-01-01T00:00:00Z The systematic siatas of three spocies of the Muridae froin the Quatemary oí the Pampean Región (Argentina), previously menlioned and illusirated by Ameghino( 1889). iselarified Afieranew study of the original rcinains. malcriáis referred lo: (I) Plyxxophurus elefttmx. (2) O.xynmterux ¡mpexux. and (3) Holochilux vulpinas, wcre determinad as 11) Reithradon uti rilas. (2) Grtuwiyx grixenflavux. and (3) Hotnchitus brasitiensis, rcspcctivcly. Other remains attributed hy Ameghino to the species Nécmmys conifer, Habrothrix internas and Calomys binan uluius bul nnt illusirated by him. are studied. All the new determinations proposed Itere are documented by deseriptions. figures, and ineasuremenls. Finally, a synthesis of the taxonomía status of the murid species menlioned or nominated by Ameghino in several works. are given.