|
Descripción
|
|
|---|---|
| Fossil woods of the genus Protocupressinoxylon Eckhold are reported from the Lower Cretaceous (upper Aptian e lower Albian) of Casal do Estortiga, near Santa Catarina da Serra, Lusitanian Basin, western Portugal. The three silicified specimens show up to 7-µm-thick-walled, rounded to polygonal tracheids; homogeneous rays, separated by 2-8 cell rows (in average 3-4); normal or traumatic, diffuse axial parenchyma with abundant cell content; and no resin canal but abundant resin content. The cupressoid conifers dominated the border between the temperate wet tropical belt and the arid mid-latitude belt. The indistinct growth rings suggest no marked seasonality in western Portugal, as it was also suggested in the Iberian Mountain System. Several other climate proxies of the trunk-bearing unit confirm that the wood was deposited under a warm and wet climate. During the Early Cretaceous, the Iberian Peninsula was a connecting bridge between Laurasia and northern Gondwana, acting as a large regional ecotone. Although the Iberian Peninsula was dominated by a Laurasian component, climatic differences between the two regions were driving forces behind biogeographical relationships in the western Tethys. | |
|
Internacional
|
Si |
|
JCR del ISI
|
Si |
|
Título de la revista
|
Cretaceous Research |
|
ISSN
|
0195-6671 |
|
Factor de impacto JCR
|
2,39 |
|
Información de impacto
|
|
|
Volumen
|
51 |
|
DOI
|
10.1016/j.cretres.2014.06.004 |
|
Número de revista
|
|
|
Desde la página
|
112 |
|
Hasta la página
|
120 |
|
Mes
|
SIN MES |
|
Ranking
|
Paleontology 6/49 |