8 documents found, page 1 of 1
Primeiro registo de trilobites no Silúrico de Portugal (Sinclinal de Moncorvo)
Pereira, Sofia; Silvério, Gonçalo; Colmenar, Jorge; Moreira, Noel; Silva, D; Sá, Artur A.A ocorrência de fósseis de trilobites em Portugal é conhecida desde há mais de 150 anos, mas permanecia por comprovar a presença deste grupo nas litologias do Silúrico. Reporta-se agora o primeiro registo de trilobites no Silúrico de Portugal, numa sucessão de intercalações de argilitos e calcários da Formação Campanhó do Sinclinal de Moncorvo. As trilobites são raras, estando a associação amplamente dominada p...
A new species of Acitheca (Psaroniaceae, Marattiales) with exceptionally and th...
Correia, Pedro; Pereira, Sofia; Šimunek, Zbynek; Sá, Artur A.; Pereira, ZéliaABSTRACT: A new fern fossil-species Acitheca machadoi sp. nov. is erected under the family Psaroniaceae (Marattiales), based on adpression fossil remains of fertile foliage from the Monsarros Formation (upper Stephanian C, upper Gzhelian) of the Buçaco Carboniferous Basin, in western central Portugal. Acitheca machadoi comprises relatively narrow and long fertile pinnules bearing exceptionally and three-dimensi...
Megaglomerospora lealiae nov. gen., nov. sp. from the upper Carboniferous of Po...
Correia, Pedro; Sá, Artur A.; Pereira, ZéliaABSTRACT: A new genus and species of fossil fungus, Megaglomerospora lealiae, is described from the Bu & ccedil;aco Carboniferous Basin (upper Stephanian C, Upper Pennsylvanian, upper Carboniferous), in central western Portugal. The new fossil fungus consists of a dense cluster of silicified large spores. These new fungal spores are oblong, subelliptical to subspherical-shaped, with a glabrous surface character...
New data on the stem and leaf anatomy of two conifers from the Lower Cretaceous...
Batista, Maria Edenilce Peixoto; Silva, Delmira da Costa; Sales, Marcos A. F.; Sá, Artur A.; Saraiva, Antonio A. F.; Loiola, Maria Iracema BezerraPseudofrenelopsis and Brachyphyllum are two conifers that were part of the Lower Creta-ceous (Aptian) taphoflora of the Crato Formation, Araripe Basin, northeastern Brazil. Theformer genus includes, so far, P.capillata and indeterminate species, whilst the latter ismainly represented by B.obesum, the most common plant megafossil recovered from thatstratigraphic unit. Here, the stem and leaf anatomy of Pseudofre...
A new cheirolepidiaceous conifer Pseudofrenelopsis salesii sp. nov. from the Ea...
Batista, Maria Edenilce P.; Kunzmann, Lutz; Bezerra, Francisco Irineudo; Andrade, José Artur F. G. de; Sá, Artur A.; Loiola, Maria Iracema B.Pseudofrenelopsis is a genus of the conifer family Cheirolepidiaceae, whose temporal distribution was restricted to the Early Cretaceous. Its set of features correspond to adaptive responses to rather unstable and stressful environ- mental conditions, such as aridity and/or groundwater salinity. In this paper, we describe Pseudofrenelopsis salesii sp. nov. from the Albian Romualdo Formation of the Araripe Basin...
New data on the stem and leaf anatomy of two conifers from the Lower Cretaceous...
Batista, Maria Edenilce Peixoto; Silva, Delmira da Costa; Sales, Marcos A. F.; Sá, Artur A.; Saraiva, Antônio A. F.; Loiola, Maria Iracema BezerraPseudofrenelopsis and Brachyphyllum are two conifers that were part of the Lower Cretaceous (Aptian) taphoflora of the Crato Formation, Araripe Basin, northeastern Brazil. The former genus includes, so far, P. capillata and indeterminate species, whilst the latter is mainly represented by B. obesum, the most common plant megafossil recovered from that stratigraphic unit. Here, the stem and leaf anatomy of Pseud...
Digestive and appendicular soft-parts, with behavioural implications, in a larg...
Gutiérrez-Marco, Juan C; García-Bellido, Diego C; Rábano, Isabel; Sá, Artur A.Trilobites were one of the most successful groups of marine arthropods during the Palaeozoic era, yet their soft-part anatomy is only known from a few exceptionally-preserved specimens found in a handful of localities from the Cambrian to the Devonian. This is because, even if the sclerotized appendages were not destroyed during early taphonomic stages, they are often overprinted by the three-dimensional, miner...
Arouca Geopark: geotourists are arriving!
Rocha, Daniela; Sá, Artur A.; Brilha, José; Gutierrez-Marco, Juan Carlos; Cachão, Mário; Couto, Helena; Medina, Jorge; Rabano, Isabel; Valério, ManuelThe Arouca Geopark, located in the Aveiro district (northern Portugal), originated in 2005 and was formally established in late 2007, under the auspices of Arouca's Municipal Chamber. This ongoing project will soon be submitted to the European and Global Geoparks Networks, making it the second Portuguese geopark inside these networks. During the last three years, an international multidisciplinary team has been...