National Museum Prague

Prague, Czech Republic

National Museum Prague

Prague, Czech Republic
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PubMed | Moravian Museum, Museum dHistoire naturelle Geneva, Dermestidae World, Centro Nazionale Per Lo Studio E La Conservazione Della Biodiversita Forestale Bosco Fontana Of Verona and 30 more.
Type: | Journal: Biodiversity data journal | Year: 2015

Fauna Europaea provides a public web-service with an index of scientific names (including synonyms) of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region), and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and 14,000 accepted subspecies, which is much more than the originally projected number of 100,000 species. This represents a huge effort by more than 400 contributing specialists throughout Europe and is a unique (standard) reference suitable for many users in science, government, industry, nature conservation and education. Coleoptera represent a huge assemblage of holometabolous insects, including as a whole more than 200 recognized families and some 400,000 described species worldwide. Basic information is summarized on their biology, ecology, economic relevance, and estimated number of undescribed species worldwide. Little less than 30,000 species are listed from Europe. The Coleoptera 2 section of the Fauna Europaea database (Archostemata, Myxophaga, Adephaga and Polyphaga excl. the series Elateriformia, Scarabaeiformia, Staphyliniformia and the superfamily Curculionoidea) encompasses 80 families (according to the previously accepted family-level systematic framework) and approximately 13,000 species. Tabulations included a complete list of the families dealt with, the number of species in each, the names of all involved specialists, and, when possible, an estimate of the gaps in terms of total number of species at an European level. A list of some recent useful references is appended. Most families included in the Coleoptera 2 Section have been updated in the most recent release of the Fauna Europaea index, or are ready to be updated as soon as the FaEu data management environment completes its migration from Zoological Museum Amsterdam to Berlin Museum fr Naturkunde.

Hermanova Z.,National Museum Prague | Hermanova Z.,Charles University | Bodor E.,Eötvös Loránd University | Bodor E.,Geological and Geophysical Institute of Hungary | Kvacek J.,National Museum Prague
Cretaceous Research | Year: 2013

The genus Knoblochia is established for fossil insect eggs. The fossils are small, longitudinally ridged, ovoid to round with projections on both ends. Their thin perforated wall is covered by minute papillae, inner surface of the wall is smooth or covered by rectangular files of cells. Fossils assigned here to Knoblochia cretacea were earlier assigned to the genus Spirellea, which encompass a heterogenous complex of small fossils being or resembling angiosperm seeds from the Late Cretaceous. The majority of species of the genus Spirellea clearly represents remains of angiosperms. However, fossils described by Knobloch and Mai (1986) as Spirellea kvacekii are distinct, particularly in having external walls perforated, neither apex nor basal projection showing any absition scar or micropyle in the botanical sense. Attribution of these fossils to insects led us to designate the new name Knoblochia cretacea with a new holotype for fossils of this kind. Comparison of Knoblochia with insect eggs of species of Phasmatodea and Lepidoptera, and seeds of Stemonaceae showed clear affinity to insects. Due to the high amount of extinction among insects since the Cretaceous, the systematic affinity of Knoblochia remains open. © 2013 Elsevier Ltd.

Averianov A.,Saint Petersburg State University | Ekrt B.,National Museum Prague
Cretaceous Research | Year: 2015

Cretornis hlavaci Frič, 1881 from the Upper Cretaceous (Turonian) of Czech Republic is a valid taxon referred to Azhdarchoidea based on having a saddle-shaped humeral head, pneumatic foramen on proximal humerus present on anterior side and absent on posterior side, elongate deltopectoral crest with subparallel proximal and distal margins, pneumatic foramen absent on distal side of humerus, metacarpals I-III not articulated with carpus and displaced on anterodorsal side of wing metacarpal, and wing metacarpal much longer than humerus. Absence of a pneumatic foramen on posterior side of proximal humerus suggests attribution of Cretornis hlavaci to Neoazhdarchia. It has a unique construction of the distal ulna with a dorsal articulation surface placed distinctly proximal to the tuberculum shared only with the non-azhdarchid azhdarchoid Montanazhdarcho minor from the Campanian of North America. Cretornis hlavaci differs from the latter taxon by the structure of its humerus and distinctly longer wing metacarpal. It is more derived than "Tapejaridae" but shares with Azhdarchidae the deltopectoral crest of the humerus displaced distally from humeral head. Cretornis cannot be assigned to Azhdarchidae because of the oval cross section of the second wing phalanx. A unique rhombic outline of the distal humerus of Cretornis hlavaci is a possible autapomorphy for this taxon. Its wing span estimated as 1.5-1.6m. This is the first taxon of non-azhdarchid pterosaurs known from the Upper Cretaceous of the Eastern Hemisphere. © 2015 Elsevier Ltd.

Kear B.P.,Uppsala University | Ekrt B.,National Museum Prague | Prokop J.,Czech Technical University | Georgalis G.L.,Aristotle University of Thessaloniki
Geological Magazine | Year: 2014

Despite being known for over 155 years, the Late Cretaceous marine amniotes of the Bohemian Cretaceous Basin in the Czech Republic have received little recent attention. These fossils are however significant because they record a diverse range of taxa from an incompletely known geological interval: the Turonian. The presently identifiable remains include isolated bones and teeth, together with a few disarticulated skeletons. The most productive stratigraphical unit is the Lower-Middle Turonian Bílá Hora Formation, which has yielded small dermochelyoid sea turtles, a possible polycotylid plesiosaur and elements compatible with the giant predatory pliosauromorph Polyptychodon. A huge protostegid, together with an enigmatic cheloniid-like turtle, Polyptychodon-like dentigerous components, an elasmosaurid and a tethysaurine mosasauroid have also been found in strata corresponding to the Middle-Upper Turonian Jizera Formation and Upper Turonian - Coniacian Teplice Formation. The compositional character of the Bohemian Cretaceous Basin fauna is compatible with coeval assemblages from elsewhere along the peri-Tethyan shelf of Europe, and incorporates the globally terminal Middle-Upper Turonian occurrence of pliosauromorph megacarnivores, which were seemingly replaced by mosasauroids later in the Cretaceous. Copyright © Cambridge University Press 2013.

Wang H.,University of Florida | Dilcher D.L.,Indiana University Bloomington | Schwarzwalder R.N.,Stanford University | Kvacek J.,National Museum Prague
International Journal of Plant Sciences | Year: 2011

Early Cretaceous platanoid species are presented, based on observations of isolated organs from the Braun Ranch locality, Kansas, and the Yankee Hill I locality, Nebraska. Approximately 500 leaf specimens and 238 infructescence specimens have been studied in detail. The reproductive axis may contain up to 37 sessile, globose infructescences. Fruits are small achenes and lack dispersal hairs. The leaves are typically three-lobed, with basal or suprabasal actinodromous or palinactinodromous venation. Secondary venation is dominantly craspedodromous. Typically, one secondary vein extends into each tooth and is accompanied by tertiary or higher-order veins, which form a series of ascending loops. Tertiary veins are percurrent, with those in the axils of primary-primary and primary-secondary veins forming a V-shaped pattern. Conically inflated petiole bases are hollow and enclose axillary buds. Stipules are triangular and small and are observed only on immature leaves. The repeated and common co-occurrence of leaves and reproductive structures and their close association at a small clay pit in Cloud County, Kansas, indicates that they are organs from one plant species. This report provides new information on the early diversity of the Platanaceae in the fossil record during the Early Cretaceous. © 2011 by The University of Chicago. All rights reserved.

Mills S.J.,University of British Columbia | Mills S.J.,Khan Research Laboratories | Kampf A.R.,Natural History Museum of Los Angeles County | Sejkora J.,National Museum Prague | And 4 more authors.
Mineralogical Magazine | Year: 2011

Iangreyite, ideally Ca 2Al 7(PO 4) 2(PO 3OH) 2(OH, F) 15•8H 2O, is anew mineral (IMA2009-087) from the Silver Coin mine, Nevada, USA and the Krásno ore district, Horní Slavkov, Czech Republic. At Silver Coin, iangreyite occurs as thin, colourless to white or cream, hexagonal tablets up to 0.4 mm in diameter and 0.02 mm thick associated with meurigite-Na, plumbogummite, kidwellite, lipscombite, strengite, chalcosiderite, wardite, leucophosphite, wavellite, goethite, barite, quartz and F-rich perhamite. At Krásno, white, yellowish or light pink iangreyite coatings consist of 0.3 mm wide clusters of minute and very thin intergrown tabular crystals with a maximum diameter of 0.2 mm. Individual iangreyite crystals are transparent with a vitreous lustre, while iangreyite clusters tend to be pearly and translucent. The estimated hardness is 3 on the Mohs scale, the fracture is irregular and the mineral is non-fluorescent under SW and LW ultraviolet light. Individual crystals are somewhat flexible and there is perfect cleavage on {001}. The density (Silver Coin), measured by the sink-float method in an aqueous solution of sodium polytungstate, is 2.46(3) g/cm 3, while the calculated density is 2.451 g/cm 3. Crystals from Silver Coin are uniaxial (+), with the indices of refraction: ω = 1.544(2) and ε = 1.554(2), measured in white light, and are non-pleochroic. The empirical formula for iangreyite from Silver Coin (calculated on the basis of 39 anions per formula unit) is: Ca 1.42K 0.22Na 0.09Ba 0.03Sr 0.01Al 6.51Mg 0.09Fe 0.02Cu 0.01Zn 0.01P 3.81F 5.24H 30.21O 33.76, while the empirical formula from Krásno is: Ca 2.15K 0.10Na 0.01Ba 0.02Sr 0.12Al 6.28Mg 0.01Fe 0.12Cu 0.08Zn 0.01P 3.64Si 0.43F 4.65H 29.62O 34.35. Iangreyite is trigonal, space group P321 and Z = 1, with the unit-cell parameters (Silver Coin): a = 6.988(1), c = 16.707(3) Å and V = 706.5(2) Å 3 and (Krásno): a = 6.989(1), c = 16.782(4) Å and V = 709.8(2) Å 3. The structure of iangreyite, modelled from powder data, consists of blocks of the crandallite-type structure that are interconnected along c via corner-sharing of crandallite-block PO 4 tetrahedra with AlO 2(OH) 3 bipyramids. This linkage generates large channels along [110] bounded by 10-member rings of octahedra, tetrahedra and trigonal biyramids, that are occupied by Ca and water molecules. © 2011 Mineralogical Society.

Popa M.E.,University of Bucharest | Kvacek J.,National Museum Prague | Vasile T.,University of Bucharest | Csiki-Sava Z.,University of Bucharest
Review of Palaeobotany and Palynology | Year: 2014

The Upper Cretaceous (Maastrichtian) formations of the Rusca Montanǎ and Haţeg basins (Romania) yield a compressive fossil flora including the genera Sabalites and Pandanites. The Rusca Montanǎ and Haţeg basins represent very important areas for Cretaceous palms, due to the remarkable density of foliar material and to their palaeogeographic significance for the Tethyan area. Sabalites longirhachis (Unger) J. Kvaček et Herman 2004, collected from the Haţeg and Poiana Ruscǎ basins, is described, discussed and figured, together with Pandanites trinervis (Ettingshausen) J. Kvaček et Herman 2004 (including here Romanian material formerly attributed to Pandanites austriacus, Pandanites acutidens and Pandanites romanicus Petrescu et Duşa 1970), while Pandanites spinatissimus Petrescu et Duşa sp. nov. (including here Pandanus tenuissimus Petrescu et Duşa 1982 nom. inval. and Pandanus barbui Petrescu et Duşa 1982 nom. inval.) is validated, emended and illustrated. These monocot taxa offer new and relevant insights into the palaeobiogeography and palaeoecology of the latest Cretaceous floras of Europe. © 2014 Elsevier B.V.

Kvacek J.,National Museum Prague | Vodrazka R.,Czech Geological Survey
Cretaceous Research | Year: 2016

Plant fossils from the volcano-clastic marine deposits of the Coniacian Hidden Lake Formation of James Ross Island in Antarctica are described based on their macromorphology. Stratigraphic positions of fossiliferous horizons and details of the lithostratigraphic situation of the middle part of the Hidden Lake Formation are published for the first time. The flora consists primarily of leaf impressions and petrified wood. There are also small amounts of mesofossils, dispersed cuticles and charcoalified wood. The megafossils typically occur fragmented, underpinning their allochtonous origin. The plants are described in systematical order. This contribution in contrast to earlier observations reports a high diversity of pteridophytes (11 taxa) and conifers (6 taxa). Angiosperms representing families Nothofagaceae, Atherospermataceae, probably Lauraceae and Sterculiaceae are the most abundant and common plant groups of the flora (12 taxa). The presence of the tropical fern family Marattiaceae and rarity of the genus Nothofagus are of interest, arguing for the prevalence of a warm temperate to tropical humid climate during the Coniacian in this part of Antarctica. © 2015 Elsevier Ltd.

Mills S.J.,Khan Research Laboratories | Sejkora J.,National Museum Prague | Kampf A.R.,Natural History Museum of Los Angeles County | Grey I.E.,CSIRO | And 5 more authors.
Mineralogical Magazine | Year: 2012

Krásnoite is a new mineral (IMA2011-040) from the Huber open pit, Krásno ore district, Czech Republic and the Silver Coin mine, Nevada, USA. Krásnoite is the fluorophosphate analogue of perhamite. Krásnoite occurs as compact to finely crystalline aggregates, balls and rosette-like clusters up to 1 mm across. Individual crystals are platy, show a hexagonal outline and can reach 0.1 mm on edge at Krásno and 0.4 mm at Silver Coin. At both localities, krásnoite occurs very late in phosphaterich paragenetic sequences. Krásnoite crystals are partly transparent with a typically pearly lustre, but can also appear greasy (Krásno) or dull (Silver Coin). The streak is white and the hardness is 5 on the Mohs scale. Crystals are brittle, have an irregular fracture, one imperfect cleavage on {001} and are not fluorescent under SW and LW ultraviolet light. Penetration twinning {001} is common. The density for both Krásno and Silver Coin material is 2.48(4) g cm-3, measured by the sink-float method in an aqueous solution of sodium polytungstate. The calculated density is 2.476 g cm-3 (Krásno). Krásnoite crystals are uniaxial (+), with ω = 1.548(2) and ε = 1.549(2) (Krásno) and ω = 1.541(1) and ε = 1.543(1) (Silver Coin). The simplified formula of krásnoite is: Ca3Al 7.7Si3P4O23.5(OH) 12.1F2•8H2O. Krásnoite is trigonal, space group P3m1, with a = 6.9956(4), c = 20.200(2) Å, V = 856.09(9) Å3 and Z = 3. Raman and infrared spectroscopy, coupled with magic-Angle spinning nuclear magnetic resonance (MAS-NMR) spectrometry, confirmed the presence of PO3F, PO4, SiO4, H2O and OH in the crystal structure of krásnoite. © 2012 Mineralogical Society.

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