Les Hipparion du Portugal

This paper is concerned with Hipparion from Ribatejo, Portugal, and with the stratigraphy of the Neogene series of this region. The first two chapters are an introduction and an historical review. Paleontological study includes both a revision of the specimens accounted by ROMAN (1907) and the description of new material. Two forms were recognized, an early H. cf. primigenium, lower Vallesian in age, NM 9 mammal unit (from Archino, Vila Nova da Rainha, Aveiras de Cima), and a more advanced H. primigenium cf. melendezi. Upper Vallesian, NM 10 (possibly lowermost Turolian, NM 11) (at Azambujeira and Marmeleira). A synthesis of Middle and Upper Miocene from Ribatejo is also presented. Levels with H. p. cf. melendezi are somewhat older than «Upper Pontian», as it was previously acknowledged, they attain at the best the lowermost Turolian (approximately corresponding to «Upper Pontian»). Even higher levels may be Turolian in age, though they are not yet accurately dated. Almost all the localities are shown (tableau 11) according to its stratigraphical position; age, correspondance to mammal units from NM 5 to NM 10 (and may be also from NM 11 to NM 12), and correlation with marine formations near Lisbon are also taken in account. The stratigraphical position of localities such as Póvoa de Santarém, Quinta do Marmelal, Pero Filho, Azambujeira (lower levels), and Fonte do Pinheiro was revised; the stratigraphical position of Marmeleira was ascertained. The localities so far known correspond to NM 5 (?), NM 6, NM 8, NM 9, NM 10 and possibly to NM II and NM 12. A new interpretation (M. T. ANTUNES) of localities with oysters from Ribatejo allows a better correlation with vertebrate localities. Relationships with Serravallian transgression seem well established. Only two localities, Vila Nova da Rainha and Foz do Alviela, may possibly be correlated to V-b division of Lisbon (Langhian) with «Hispanotherium fauna». All the other localities are younger than Serravallian oyster beds. Undirect correlation shows that NM 6 localities are somewhat younger than the apogee ef Serravallian transgression (corresponding approximately to Blow's N 11 to N 13 zones based on planctonic foraminifera).

A new wader, Recurvirostridae (Charadriiformes), from the early Eocene of Portugal

A new wader (Aves, Charadriiformes, Recurvirostridae) from the Early Eocene site of Silveirinha, in Lower Mondego region, Central Portugal, is described. Comparisons have been made with other forms, both extant and fossil; its affmities are discussed. Silveirinha wader is ascribed to Fluviatilavis antunesi, n. gen. n. sp.

Quelques mastodontes miocènes du Portugal

From a paleontological point of view previous determinations for some specimens as Tetralophodon longirostris can be confirmed from Azambujeira (upper level), Valverde and Vale de Matança. A so far undescribed and rare D3 (from Azambujeira, middle level) has been studied. For the first time in Portugal a Gomphotherium angustidens transitional to «Tetralophodon» grandincisivus is reported (from Portas do Sol). Teeth from Lisbon formerly reported (in part) to T. longirostris are now ascribed to G. angustidens. The presence of T. longirostris at Vale de Matança excludes a Pliocene age for Marateca Formation. This and some other evidence clearly points out towards an early Vallesian age. G. angustidens transitional to T. grandincisivus found at Portas do Sol is enough to ascribe this locality to the latest Middle Miocene or earliest Upper Miocene. Therefore it is possible to correlate overlying Santarém limestones to the Vallesian Cartaxo and Almoster ones which are better dated.

Origin and evolution of Upper Triassic to Miocene clay-mineral associations from the eastern Algarve of Portugal

XRD-analyses of pelitic deposits of Upper Jurassic to Miocene age occuring in the eastern Algarve (Portugal), give evidence of the occurrence of detrital clay minerals of continental origin as well as of conspicuous neoformations of marine provenance. The vertical succession of clay-mineral associations indicates the existence of three distinctive evolutionary cycles which are thought to reflect tectonically controlled transgressive-regressive events.

Miocene catfishes (Ariidae,Bagridae) from Lisbon: a Nilotic (or Sudanian) type fauna

Miocene catfishes from Lisbon are dealt with. Two distinct sets of pectoral and dorsal pterygiophores are described. That from the Langhian V-b is referred to Arius sp. probably close to A. heudeloti. Another ser from the uppermost Burdigalian V-a may be ascribed to a bagrid, cf. Chrysichthys sp., identified for the first time in this region. The catfish and Lates association is sctrikingly similar to African, nilotic or sudanian ones as far as freshwaters are concerned. In marine, coastal environments, stenotherm warm-water forms (Polynemids, large barracudas and several sharks) indicate, as a model, faunas like chose from Cape Verde to northern Angola. There is some gradation for brackish waters (fig. 1). Catfishes and Lates probably migrated into the Iberian Peninsule in the lower Miocene. They are unknown after Langhian V-b except for a reappearance of Arius in the middle Tortonian VII-b. Decreasing temperatures and aridity account for local extinction at least in freshwaters. Expansion of these fishes have been made easier owing to the displacement of land masses chat narrowed or closed the marine waterway between Europe and Africa. Salinity tolerance is not necessarily the sole explanation for migration. Catfishes plus Lates associations colonized inland waters from both sides of the Paleomediterranean. Local extinction may have weighed more in the development of modern distribution patterns than migration.

Integrating early aspects with goal-oriented requirements engineering

Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia Informática

Miocene lithological, foraminiferal and palynological data from the Belverde borehole (Portugal)

XVIII Jornadas de Paleontología, 2002

Flora aromática e medicinal do nordeste português: espécies, usos e saberes da Terra-Fria Transmontana

Actas do II Colóquio Nacional de Plantas Aromáticas e Medicinais, Setembro 2007, pp. 68-78

A stratigraphic framework for the Miocene from the lower Tagus Basin (Lisbon, Setúbal Península, Portugal) Depositional sequences, biostratigraphy and isotopic ages

Rev. Soc. Geol. España, 12(1), ano 1999

Upper Miocene planktonic foraminifera from Algarve. Chronostratigraphical implications

Ciências da Terra(UNL) Nº 15, pp. 199-208

Flora bacteriana da cavidade oral, presas e veneno de Bothrops jararaca: possível fonte de infecção no local da picada

Materiais colhidos das presas, das bainhas das presas e do veneno de 15 Bothrops jararaca recém-capturadas, aparentemente saudáveis, foram submetidos a exame bacterioscópico e cultura aeróbia a anaeróbia. As bactérias mais freqüentemente isoladas foram os estreptococos do grupo D (1.2 serpentes), Enterobacter sp. (6), Providencia rettgeri (6), Providencia sp. (4), Escherichia coli (4), Morganella morganii (3) e Clostridium sp. (5). Como estas bactérias são semelhantes às encontradas nos abscessos de pacientes picados por serpentes do gênero Bothrops, é válido considerar a possibilidade de que bactérias da boca da serpente sejam inoculadas no momento da picada e, encontrando condições favoráveis de multiplicação, causem infecção.

Miocene c4tfishes (Ariidae, Bagridae) from Lisbon: a Nilotic (or Sudanian) type fauna

Miocene catfishes from Lisbon are dealt with. Two distinct sets of pectoral and dorsal pterygiophores are described. That from the Langhian V-b is referred to Arius sp. probably close to A. Beudeloti. Another set from the uppermost Burdigalian V-a may be ascribed to a bagtid, cf, Chrysichthys sp., identified for the first time in this region. The catfish and Lates association is strikingly similar to African, nilotic or sudanian ones as far as freshwaters are concerned. In marine, coastal environments, stenotherm warm-water forms (Polynemids, large barracudas and several sharks) indicate, as a model, faunas like those from Cape Verde to northern Angola. There is some gradation for brackish waters (fig. 1). Catfishes and Lates probably migrated into the Iberian Peninsule in the lower Miocene. They are unknown after Langhian V-b except for a reappearance of Arius in the middle Tortonian VII-b. Decreasing temperatures and aridity account for local extinction at least in freshwaters. Expansion of these fishes have been made easier owing to the displacement of land masses that narrowed or closed the marine waterway between Europe and Africa. Salinity tolerance is not necessarily the sole explanation for migration. Catfishes plus Lates associations colonized inland waters from both sides of the Paleomediterranean. Local extinction may have weighed more in the development of modern distribution patterns than migration.

Les plus anciens mammifères terrestres du Miocène marin de Lisbonne - le gisement du Km 10

For the first time, small mammals were found at the earliest marine level in the northeastern part of the lower Tagus basin, to the NE of Lisbon. At this new locality, at the 10 kilometer of the Lisbon-Oporto A1-IP1 highway,conglomerates yielded, along with marine fossils, more or less abraded teeth and bones from insectivores,lagomorphs, rodents and small artiodactyls (sec Tableau 1). Age may he ascribed to the lower Miocene, MN 2b Neogene mammal unit (about 22 My), but an early MN 3 age cannot be entirely excluded. That corresponds to latest Aquitanian (or less probably earliest Burdigalian) (sec Tableau 2). This is the first hitherto found locality with small mammals of this age as far as Portugal is concerned, as well as the oldest locality so far known in the Tagus basin. Km 10 is somewhat older than the localities of Universidade Católica and Avenida do Uruguay in Lisbon (ANTUNES & MEIN, 1986). Hence we can rather accurately date the age of the first marine transgression in the northeastern part of the lower Tagus basin. This shows that in this region there are no marine equivalents of the "Venus ribeiroi beds" (Aquitanian,Division 1 of the Lisbon Miocene series). Correlation between this unit and the uppermost levels of the essentially paleogene "Complexo de Benfica" may be possible. Fossils at km 10 point out to shallow, coastal, highenergy marine environments. Sedimentological features are compatible with this model. Dry land and swamps with brackish (or ev en fresh) waters were present nearby. From those areas came remains of mammals, crocodylians, as well as oysters and charophytes that were later transported to the sea. Sea was warmer than the extant Atlantic at the same latitudes, even if conditions were not strictly tropical then. These conditions surely influenced climate in the nearby regions. Ecological data concerning mammalian faunas distinctly point out to nearby forest-rich environments, much more so than for Universidade Católica and Avenida do Uruguay localities, from where drier, even steppe environment forms largely prevail.

The presence of Taeniodonta (Mammalia) in the Early Eocene of Europe

The first representative of the extinct mammalian order Taeniodonta in Europe is described, Eurodon silveirinhensis n. gen., n. sp., from the early Eocene locality of Silveirinha, Portugal. A formerly enigmatic form, Lessnessina Hooker, 1979, from Abbey Wood, England, and approximately contemporary, is also referred to the Taeniodonta.

Etude de populations de Glycymeris (Bivalvia, Glycymerididae) du Miocène d'Aquitaine, Sud-Ouest de la France Studyof Glycymeris (Bivalvia, G1ycymerididae) populations from the Aquitaine Miocene, SW France

Abundant crops of Glycymeris have been made in the neritic bioclastic deposits of the Aquitaine Basin. After an outline about the Chattian taxa, the 5 Lower Miocene lineages are presented; G. cor is plainly predominant. Then, the Middle Miocene faunas are also detaiIed, G. inflatus and G. bimaculatus being the most frequent taxa. A test of biometrical analysis about the G. cor species is presented.