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| Registros recuperados: 10 | |
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| NOWATZKI,CARLOS H.; KERN,HENRIQUE P.. |
| This paper discusses the facies distribution of Mesozoic eolian sandstones between the Sanga do Cabral and Botucatu formations and also their contact relationships, in São Leopoldo area, State of Rio Grande do Sul (RS), southern Brazil. The main distinctive characteristics regarding these sandstones and formations are the mineralogical composition, paleocurrents and the occurrence of wet interdune deposits. These interdune deposits are characterized by frequent thin mudstone layers with mudcracks, ichnofossils and salt impressions. There are also some features that resemble plant fossils. The distinctive characteristics of these sequences to Sanga do Cabral and Botucatu formations allow us to suggest the informal name of Pedreira Sandstone, considering its... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stratigraphy; Paraná Basin; Mesozoic; Faciology; Paleoenvironments. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200010 |
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| MIGUEL,RAPHAEL; GALLO,VALÉRIA; MORRONE,JUAN J.. |
| Mawsoniidae are a fossil family of actinistian fish popularly known as coelacanths, which are found in continental and marine paleoenvironments. The taxon is considered monophyletic, including five valid genera (Axelrodichthys, Chinlea,Diplurus, Mawsonia andParnaibaia) and 11 genera with some taxonomical controversy (Alcoveria, Changxingia,Garnbergia, Heptanema,Indocoelacanthus, Libys,Lualabaea, Megalocoelacanthus,Moenkopia, Rhipis andTrachymetopon). The genera restricted to the Northern Hemisphere (Diplurus and Chinlea) possess the oldest records (Late Triassic), whereas those found in the Southern Hemisphere (Mawsonia, Axelrodichthys, andParnaibaia) extend from Late Jurassic to Late Cretaceous, especially in Brazil and Africa. We identified... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mawsoniidae; Mesozoic; Evolutionary biogeography; Track analysis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100159 |
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| Feldmann, Rodney M.. |
| Decapods are the most diverse and complex group of crustaceans, adapted for life in all parts of the marine environment, many aquatic habitats, and some terrestrial niches. With this diversity of life styles, a vast range of morphotypes of decapods has evolved, exploiting almost every imaginable variation in morphology of the complex exoskeleton that characterizes them. Many of the morphological variants are a response to exploiting a particular niche in which the organisms live or an adaptation to particular behavioral characteristics. Assessing the significance of morphological variation in the fossil record is challenging because of the taphonomic overprint that results in loss of soft tissue, preservation of partial remains of hard parts, and vastly... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Decapoda; Mesozoic; Cenozoic; Behavior. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/534405 |
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| Jagt, J.W.M.; Donovan, S.K.; Jagt-Yazykova, E.A.. |
| The south-western Indian Ocean islands, excluding the microcontinent of Madagascar, are geologically complex and diverse. They have been subject to drastic sea level changes, volcanic events and anthropogenic changes, all of which have contributed to confuse understanding of their avian biogeography. An array of factors have affected these avifaunas, based on palaeontological, historical and molecular evidence,which together have shown that avian biogeography is not congruent with the relative age and size of the islands. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Macrofossils; Cretaceous; Maastrichtian; Mesozoic; Geology; Palaeontology; 38.20; 38.22. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/428551 |
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| Azevedo,Celso O.; Azar,Dany. |
| A new subfamily, a new genus and a new species of Bethylidae are described and illustrated from a single individual in Early Cretaceous amber from central Lebanon. Lancepyrinae subfam. nov. represented by Lancepyris opertus gen. and sp. nov. present a mosaic of features common among several bethylid subfamilies. The new taxon is easily distinguished from related taxa mainly by the forewing venation, which has an unusual combination of closed lanceolate marginal cell, Rs+M tubular and well pigmented and M+RS angled. Phylogenetic analysis including indicates that Lancepyris opertus gen. and sp. nov. is a sister group of all subfamilies that have Coleoptera as hosts. A checklist of the 45 known fossil bethylid species is provided. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lancepyris; Lower Cretaceous; Mesozoic; New genus; New species. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000300004 |
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| Registros recuperados: 10 | |
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