Leños Fósiles De Leguminosas de la Formación Ituzaingó, Entre Ríos, Argentina: Implicancias Paleoecológicas y Paleobiogeográficas
2013; Asociación Paleontológica Argentina; Volume: 50; Issue: 2 Linguagem: Inglês
10.5710/amgh.6.01.2013.599
ISSN1851-8044
AutoresMaría Jimena Franco, Mariana Brea,
Tópico(s)Plant and animal studies
ResumoAbstract. FOSSIL WOODS OF LEGUMINOSAE FROM THE ITUZAINGO FORMATION, ENTRE RIOS, ARGENTINA: PALEOECOLOGICAL AND PALEOBIOGEOGRAPHIC IMPLICATIONS. The family Fabaceae is among the best represented in the fossil record of the Cenozoic of Argentina and in particular of the Ituzaingo Formation. This paper describes four types of permineralized by silicification woods related to this family, Menendoxylon vasallensis Lutz, Anadenantheroxylon villaurquicense Brea, Acenolaza y Zucol emend., Prosopisinoxylon americanum sp. nov. and Gleditsioxylon paramorphoides sp. nov. Two new fossil species were recognized and the diagnosis of Anadenantheroxylon villaurquicense was amended. The specimens were found in the Ituzaingo Formation (Pliocene—Pleistocene), Entre Rios, Argentina, and have only preserved the anatomy of secondary xylem. Some anatomical features were related with the presence of a seasonal and dry climate. From paleogeographic and paleoecological features of distribution of most related extant genera, it is p...
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