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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 4
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A revision of the Late Triassic Bintan fl ora from the Riau Archipelago (Indonesia) Naturalis
Wade-Murphy, J.; Konijnenburg-van Cittert, J.H.A. van.
In 1951, W.J. Jongmans published the description of a small flora from Bintan Island in the Riau Archipelago of Indonesia, based on material from one fossil locality in the Bintan Formation (Late Triassic). The complete fossil plant collection from Bintan includes specimens from four localities, all of which were examined for the first time in this study. Twenty-one taxa were determined, compared to an earlier four, and three earlier determinations were revised. Of these 21 taxa, 14 were attributed to the Bennettitales, including eleven leaf species, one Williamsonia sp., and two other fertile and stem organs. The other components of the flora were limited to twigs and cones of Brachyphyllum sp., leaves of Podozamites sp. and leaves of Nilssonia sp., in...
Tipo: Article / Letter to the editor Palavras-chave: Palaeobotany; Southeast Asia; Bennett itales; Taphonomy; Palaeogeography; 38.21.
Ano: 2008 URL: http://www.repository.naturalis.nl/record/314208
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Composition and palaeogeographic position of the Early Permian Jambi flora from Sumatra Naturalis
Waveren, I.M. van; Iskandar, E.A.P.; Booi, M.; Konijnenburg-van Cittert, J.H.A. van.
A preliminary taxonomic revision of the Early Permian Jambi flora results in a lower number of taxa, a number of new determinations and several new combinations (Dicranophyllum molle (Jongmans & Gothan) comb. nov., Oligocarpia posthumii (Jongmans & Gothan) nov. comb., Callipteridium strictinervis (Jongmans & Gothan) comb. nov.). Cones containing the bicuspidate seeds Tobleria bicuspis are recorded for the first time. The exact stratigraphic position of the Jambi flora is unknown, but brachiopods and fusulinids indicate an Early Permian age. Comparisons with the East Asian Permian floras of the Cathaysian realm indicate that the Jambi palaeoflora can best be compared to a relatively xeric Cathaysian flora, possibly indicative of relatively high...
Tipo: Article / Letter to the editor Palavras-chave: Plants; Permian; Indonesia; Palaeogeography; 38.21.
Ano: 2007 URL: http://www.repository.naturalis.nl/record/314193
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New palynological data from the Devonian Villavicencio Formation, Precordillera of Mendoza, Argentina Ameghiniana
Rubinstein,Claudia V.; Steemans,Philippe.
New terrestrial and marine palynomorphs of the lower part of the Villavicencio Formation, San Isidro Creek, Precordillera of Mendoza, Argentina, are evaluated. The palynomorph assemblage is dominated by miospores, and also contains acritarchs and scarce chitinozoans. Different processing methods have been tested due to the poor preservation state of the palynomorphs. The new slides provided abundant and diverse palynomorphs and allowed the recognition of 13 miospore species and two acritarch species. This review suggests a late Pragian to early Emsian age, thus confirming and refining previous palynological dating. The miospore assemblage may be correlated with the upper part of the Ems Biozone, in terms of the Devonian miospore zonation of the Brazilian...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Devonian; Miospores; Acritarchs; Biostratigraphy; Palaeogeography; Precordillera; Mendoza; Argentina.
Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142007000100001
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Southeast Asia’s changing palaeogeography Naturalis
Hall, R..
Geology provides the basis for understanding distributions of faunas and floras in Southeast Asia but only via a complex interplay of plate movements, palaeogeography, ocean circulation and climate. Southeast Asia grew incrementally by the addition of continental fragments, mainly rifted from Australia, and added to the margins of Sundaland as a result of subduction. Sundaland was an almost permanent land area from the beginning of the Mesozoic. The addition of the continental fragments of Southwest Borneo and later East Java–West Sulawesi formed a much larger emergent land area by the Late Cretaceous that extended from Indochina to West Sulawesi. Subduction resumed at the Sundaland margin in the Eocene and this led to widespread rifting within Sundaland,...
Tipo: Article / Letter to the editor Palavras-chave: Indonesian Gateway; Plate tectonics; Palaeogeography; Southeast Asia.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/525351
Registros recuperados: 4
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