Data/hora: 03/06/2024 04:42:25

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Permineralized conifer-like leaves from the Jurassic of Patagonia (Argentina) and its paleoenvironmental implications	
Autores: 	FUEYO,GEORGINA M. DEL; GNAEDINGER,SILVIA C.; DIAZ,MAITEN A. LAFUENTE; CARRIZO,MARTÍN A.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Conifers; Jurassic; La Matilde Formation; Leaves; Patagonia; Permineralized.	
Resumo: 	Abstract Abstract: Anatomically preserved conifer-like leaves from the Middle Jurassic La Matilde Formation at the Barda Blanca locality in the Gran Bajo de San Julián area, southern Patagonia are described here. Leaves are assigned to conifers based on the following foliar features: thick-walled epidermal cells, a sclerenchymatic hypodermis, resin canals and transfusion tracheids associated with the vascular bundle. General mesophyll anatomy and inferred foliar morphology suggest a similarity to large, broad, linear-lanceolate, multi-veined conifer-like leaves. The general foliar habit indicates an affinity with the large, multi-veined leaves of the Araucariaceae; especially with those exhibited by the species of the Araucaria sections, Araucaria and Bunya. Anatomically, the permineralized leaves exhibit xeromorphic foliar features, including thick-walled epidermal cells, an isobilateral mesophyll with well-developed palisade cells and mechanical tissue. The general leaf anatomy shown by the Patagonian specimens along with sedimentological data may suggest that during the deposition of the La Matilde Formation at the Barda Blanca locality, the parent plant was well adapted to the environmental conditions, which probably consisted of a high light intensity with an adequate quantity of water in the soil, which increased the maximum leaf conductance of CO2.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400510	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201920180363	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.91 suppl.2 2019	
Fonte: 	info:eu-repo/semantics/openAccess