Data/hora: 11/06/2024 09:53:11

Provedor de dados: | 41
País: | Argentina
Título: | A new araucarian fossil species from the Paleogene of southern Argentina
Autores: | Panti,Carolina; Césari,Silvia N.; Marenssi,Sergio A.; Olivero,Eduardo B.
Data: | 2007-03-01
Ano: | 2007
Palavras-chave: | Gymnosperms; Araucariaceae; Araucaria; Cuticle; Paleogene; Argentina.
Resumo: | A new Araucariaceaea from the Paleogene of Tierra del Fuego Province, Argentina is described. Araucaria pararaucana sp. nov. has imbricate, ovate-lanceolate leaves with an acute apex, characterized by the presence of discontinuous and longitudinally oriented stomatal rows separated by epidermal cells, which may be slightly sinuous. Stomatal guard cell surface is granular. These fossil leaves are compared with the extant sections Bunya, Intermedia and Araucaria. Their anatomical characters along with the external morphology suggest a close affinity with the extant southern Patagonian species A. araucana (Molina) K. Koch. The record of this new late Eocene species provides more evidence for a probable unique representation of Section Araucaria in the area during the Tertiary.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142007000100016
Editor: | Asociación Paleontológica Argentina
Formato: | text/html
Fonte: | Ameghiniana  v.44 n.1 2007
Fonte: | info:eu-repo/semantics/openAccess