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  • 1
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    Die Makrofloren des saarpfälzischen Rotliegenden (? Ober-Karbon - Unter-Perm; SW-Deutschland) (1985)
    Details
    Publication Date: 2024-06-24
    Description: Ein kurzer Abriß der paläobotanischen Forschungsgeschichte des saarpfälzischen Rotliegenden wird gegeben; ein Überblick über ältere Bestandsaufnahmen saarpfälzischer Rotliegendfloren schließt sich an. Einige der von Weiss (1868, 1869 bis 1872) und Florin (1938-1945) angegebenen Fundorte wurden in die von Boy & Fichter (1982) publizierte neue lithostratigraphische Gliederung des saarpfälzischen Rotliegenden eingestuft; ihre Floreninhalte sind aufgelistet. Sämtliche den Verfassern bekannte bzw. bekannnt gewordenen, heute noch zugänglichen Pflanzenlagerstätten sind ebenfalls in das Schema von Boy & Fichter (1982) stratigraphisch eingestuft worden, und ihre Floreninhalte sind in Tabellen angegeben. Zusätzlich wird eine aktualisierte Florenliste zu der (seit längerem bearbeiteten) Lokalität Sobernheim geliefert. Im Tafelteil werden die wichtigsten Florenelemente des saarpfälzischen Rotliegenden abgebildet, der Begleittext behandelt Fragen der Taxonomie und Nomenklatur.
    Description: Abstract: The history of palaeobotanical investigations on the Rotliegendes of the Saar-Nahe area is briefly summarized. A review of previous inventories is given. A new lithostratigraphical subdivision of the Rotliegendes of the Saar-Nahe area was published by Boy & Fichter (1982). The stratigraphical positions of some of the localities mentioned by Weiss (1868, 1869-1872) and Florin (1938-1945) could be determined within this scheme. Their floral content is listed on tables. The occurrences of plant remains in a large number of localities, distributed over several lithostratigraphical units, are shown on tables. All the plant localities known to the authors, most of them still being accessible, are included. An updated list of the plant taxa of the locality Sobernheim is given separately. The most characteristic plant taxa are illustrated, some remarks on problems on taxonomy and nomenclature are included.
    Description: 1. Einleitung 2. Zur Geschichte der paläobotanischen Forschung im saarpfälzischen Rotliegenden 3. Altere Bestandsaufnahmen saarpfälzischer Rotliegendfloren 4. Bemerkungen zu den Fundorten und Fundschichten 5. Stratigraphische und geographische Verbreitung der saarpfälzischen Rotliegendfloren 5.1. Unterrotliegendes 5.2. Oberrotliegendes Tabellen 1-19 Schriften Verzeichnis der Tafeln Tafeln 1-42
    Description: research
    Keywords: ddc:561 ; Rotliegend ; Saar-Nahe-Becken ; Paläobotanik
    Language: German
    Type: doc-type:article , publishedVersion
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    CITATION GEO-LEO
  • 2
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    Geologische und geomagnetische Untersuchungen am Pfahlberg, einem quartärenVulkan im rechtsrheinischen Schiefergebirge (1989)
    Details
    Publication Date: 2024-06-24
    Description: Die Verbreitung der basaltischen Gesteine im Bereich des Pfahlberges wurde geologisch kartiert. Die verschiedenen Gesteinstypen werden detailliert beschrieben. Die geomagnetische Untersuchung des basaltischen Körpers wird an Hand von 7 Profilen erläutert. Mit Hilfe der Geomagnetik wurden einerseits die Ergebnisse der geologischen Kartierung bestätigt, zum anderen konnte eine Fortsetzung des Basaltes unter jüngerer Löß- und Bimsbedeckung nachgewiesen werden. Die Genese des Pfahlberges wird diskutiert. Der Basalt ist vermutlich vorwiegend als Lavastrom ausgetreten. Teilweise ist er lagergangartig zwischen seinen Tuff und das devonische Grundgebirge eingedrungen.
    Description: Abstract: The distribution of the basaltic rocks within the region of the Pfahlberg was mapped geologically. The different rock types are described in detail. The geomagnetical investigation of the basaltic knob is illustrated by seven cross-sections. By support of the geomagnetics the results of the geological mapping are verified. It was also possible to prove the continuation of the basalt below the younger cover of loess and pumice. The genesis of the Pfahlberg is discussed. Probably the basalt is especially flown out as a lava river. Partly it is intruded dikelike between its tuff and the devonian basement.
    Description: 1. Einleitung 2. Lage und Morphologie des Pfahlberges 3. Geologischer Überblick 4. Vulkanismus im Westerwald 5. Basaltvorkommen des Pfahlberges 5.1. Pyroklastische Gesteine 5.2. Basalt-Gesteine 6. Geomagnetische Untersuchungen6 7. Genese des Pfahlberges
    Description: research
    Keywords: ddc:554.3 ; Rheinisches Schiefergebirge ; Westerwald ; TK 5511 ; Geomagnetik ; Vulkanismus ; Quartär
    Language: German
    Type: doc-type:article , publishedVersion
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    CITATION GEO-LEO
  • 3
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    Ficus pongumphaii (Moraceae), a new species from Thailand, compared with the ambiguous species F. talbotii (2019)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 64, pp. 108-114
    Details
    Publication Date: 2024-06-23
    Description: A deciduous shrub previously included in Ficus talbotii for many years, is now regarded as a new species, Ficus pongumphaii. It is morphologically distinct from F. talbotii with as typical characters the densely brown pubescent to tomentose or villous on leafy twig; the elliptic, suborbicular to obovate leaf blades that are brown tomentellous on the upper surface and brown floccose tomentose to villous underneath; the pedunculate figs are obovate, brown floccose or villous outside and have internal hairs. The leaf anatomy shows a multiple epidermis on both surfaces; enlarged lithocysts on both sides of the lamina, which are more abundant adaxially and with very few abaxially. The species, endemic to Thailand, is named after the great Thai dendrologist, Associate Professor Somnuek Pongumphai.
    Keywords: Ficus ; leaf anatomy ; Moraceae ; new species
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
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    A new species and a synopsis of the Hedyotis-Oldenlandia group (Rubiaceae: Spermacoceae) in Andaman & Nicobar Islands, India (2019)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 64 no. 3, pp. 225-230
    Details
    Publication Date: 2024-06-23
    Description: An identification key to all the reported species of Hedyotis-Oldenlandia group (Hedyotis, Oldenlandia, Exallage, Leptopetalum, Scleromitrion and Debia) in Andaman & Nicobar Islands is presented with one new species, Oldenlandia smita-crishnae, described from Saddle Peak forests of North Andaman, India. It shares some characters with Oldenlandia herbacea, O. corymbosa and O. pseudocorymbosa. However, it is remarkable for its abaxially puberulous leaves, divaricate stipules, ellipsoid to obovoid hypanthium, pink-striped corolla lobes and 20–30-seeded, inserted capsule. Furthermore, a new combination in Exallage is proposed and lectotypes for Spermacoce cristata, S. costata, Hedyotis vestita and Oldenlandia stocksii are designated.
    Keywords: Andaman & Nicobar Islands ; Hedyotis-Oldenlandia ; India ; new species ; typification
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 5
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    Hibiscus fabiana sp. nov. (Malvaceae) from the Guinea Highlands (West Africa) (2020)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 65 no. 1, pp. 69-74
    Details
    Publication Date: 2024-06-23
    Description: Hibiscus fabiana Cheek (sect. Furcaria, Malvaceae) is described from the Guinea Highlands of West Africa, and its taxonomic affinities and ecology are considered. Hibiscus fabiana has previously been confused with H. rostellatus but has red fleshy calyx ribs (vs not red and non-fleshy), the calyx surface is glabrous apart from 1-armed bristles (vs densely covered in minute white stellate hairs and bristles 2–5-armed), the leaves 3(–5)-lobed, bases truncate to rounded (vs 5-lobed, cordate). The conservation status of the new species is assessed using the IUCN 2012 standard as Vulnerable. In the context of the recently discovered extinction of the Guinean endemic Inversodicraea pygmaea G.Taylor (Podostemaceae), we discuss the 30 new species to science discovered in Guinea since 2005, all but one of which are also range-restricted and threatened, usually by development or habitat loss. We consider it urgent to avoid their extinction, ideally with in situ conservation using an Important PlantAreas approach.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Bowal ; conservation ; Furcaria ; Guinea Highlands ; Hibiscus ; Important Plant Areas ; Simandou
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 6
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    The pharynx of the iconic stem-group chondrichthyan Acanthodes Agassiz, 1833 revisited with micro-computed tomography (2024)
    In:  Zoological Journal of the Linnean Society vol. 2024 no. XX
    Details
    Publication Date: 2024-06-23
    Description: Acanthodes has long been the primary source of information on the pharyngeal skeleton of ‘acanthodians’. Because of this its anatomy has played a disproportionate role in attempts to understand the evolution of the jawed vertebrate pharynx and the clade as a whole. However, the anatomy of the pharynx of Acanthodes, now understood to be a stem-group chondrichthyan, remains poorly characterized and subject to several com- peting interpretations. We used computed tomography to image the articulated pharyngeal skeletons of three specimens of Acanthodes confusus from Lebach, Germany. Acanthodes has a mélange of osteichthyan-like and chondrichthyan-like morphologies in its pharyngeal skeleton. Like many other chondrichthyans, Acanthodes lacked hypohyals, and had four pairs of posteriorly oriented pharyngobranchials. Like osteichthyans, Acanthodes possessed an interhyal, but lacked the separate infra- and supra-pharyngobranchial elements present in osteichthyans and the crown- chondrichthyan Ozarcus. Using these new data we built and animated a digital 3D model of the pharyngeal endoskeleton in Acanthodes, showing that the jaws could have swung outwards during the opening cycle, increasing the anteriorly facing area of the gape for suspension feeding. These new data provide a more definitive picture of the anatomy of a taxon that has long been of great significance in early vertebrate palaeontology.
    Keywords: acanthodian ; branchial skeleton ; chondrichthyan ; computed tomography ; Permian ; pharynx
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 7
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    Recircumscription and revision of the genus Vanoverberghia (Zingiberaceae) (2019)
    Naturalis Biodiversity Center
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 64 no. 2, pp. 140-157
    Details
    Publication Date: 2024-06-23
    Description: The genus Vanoverberghia currently includes three species namely V. sepulchrei and V. rubrobracteata from the Philippines and V. sasakiana from Taiwan. New material targeting the Alpinia eubractea clade of the tribe Alpinieae was used to test the monophyly of Vanoverberghia.Acombined analysis of the ITS and trnK/matK regions reveals that these three species form a strongly supported monophyletic clade with Alpinia diversifolia and Alpinia vanoverberghii. The morphological descriptions of all species were updated after examining recent collections and comparing with types and protologues. The original description of A. diversifolia did not include information on the flowers which are described here. The morphology of A. diversifolia and A. vanoverberghii is for most parts in accordance with the previous perception of the genus but a few characters are added and a recircumscription of Vanoverberghia is subsequently provided here. Vanoverberghia diversifolia is reinstated and A. vanoverberghii is combined in Vanoverberghia. Furthermore, collections from northern Luzon documents the presence of V. sasakiana and all species of Vanoverberghia thus occur in the Philippines. A key to the five species is provided including a comprehensive taxonomic revision and designation of three lectotypes.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics ; Alpinia ; ITS ; Lanyu ; Luzon ; new species record ; trnK/matK
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 8
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    Computed tomography analysis of multicorer SO268/2_107-1, core 15 (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-23
    Description: Selected multicorer cores of R/V Sonne cruise SO268-2 were scanned by a Toshiba Aquilion 64 computer tomograph (CT) at the hospital Klinikum Bremen-Mitte with an x-ray source voltage of 120 kV and a current of 600 mA. The CT image stacks have a resolution of 0.35 mm in x/y-direction and 0.5 mm resolution in z-direction (0.3 mm reconstruction unit). Images were reconstructed using Toshiba's patented helical cone beam reconstruction technique (TCOT) and are provided in DICOM-format. The data were processed with the ZIB edition of the Amira software (version 2021.03; Stalling et al., 2005; http://amira.zib.de). Within Amira, the core liners, including about 2 mm of the core rims, were deleted from the data set. Mangan nodules with diameters 〉~1 mm, open bioturbation traces, an unidentified organism (only present in core SO268-2-200-1 MC18), the natural bioturbated and surficial homogenised sediment were segmented by a marker-based watershed segmentation and visualized in 3D. Subsequently, the sediment components were quantified (MaterialStatistics module; volume per slice) and the mean and standard deviation of the sediment x-ray attenuation (MaterialStatistics module; statistics per slice per label; to avoid marginal averaging effects the sediment label was reduced by three voxels) were determined.
    Keywords: Binary Object; Bioturbation; Bioturbation, volume; Center for Marine Environmental Sciences; Clarion-Clipperton Fraction Zone, North East Pacific Ocean; Computer tomography (CT) Toshiba Aquilion 64; DEPTH, sediment/rock; File content; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Manganese nodules, relative volume; Manganese nodules, volume; MARUM; MUC; MUC-23; MultiCorer; Number of slice; Number of voxels, matrix sediment; Sediment, bioturbated lower layer, relative volume; Sediment, bioturbated lower layer, volume; Sediment, homogenized upper layer, relative volume; Sediment, homogenized upper layer, volume; SO268/2; SO268/2_107-1; Sonne_2; X-ray attenuation, matrix sediment, mean; X-ray attenuation, matrix sediment, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 11502 data points
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    DATA PANGAEA
  • 9
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    Computed tomography analysis of multicorer SO268/2_122-1, core 14 (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-23
    Description: Selected multicorer cores of R/V Sonne cruise SO268-2 were scanned by a Toshiba Aquilion 64 computer tomograph (CT) at the hospital Klinikum Bremen-Mitte with an x-ray source voltage of 120 kV and a current of 600 mA. The CT image stacks have a resolution of 0.35 mm in x/y-direction and 0.5 mm resolution in z-direction (0.3 mm reconstruction unit). Images were reconstructed using Toshiba's patented helical cone beam reconstruction technique (TCOT) and are provided in DICOM-format. The data were processed with the ZIB edition of the Amira software (version 2021.03; Stalling et al., 2005; http://amira.zib.de). Within Amira, the core liners, including about 2 mm of the core rims, were deleted from the data set. Mangan nodules with diameters 〉~1 mm, open bioturbation traces, an unidentified organism (only present in core SO268-2-200-1 MC18), the natural bioturbated and surficial homogenised sediment were segmented by a marker-based watershed segmentation and visualized in 3D. Subsequently, the sediment components were quantified (MaterialStatistics module; volume per slice) and the mean and standard deviation of the sediment x-ray attenuation (MaterialStatistics module; statistics per slice per label; to avoid marginal averaging effects the sediment label was reduced by three voxels) were determined.
    Keywords: Binary Object; Bioturbation; Bioturbation, volume; Center for Marine Environmental Sciences; Clarion-Clipperton Fraction Zone, North East Pacific Ocean; Computer tomography (CT) Toshiba Aquilion 64; DEPTH, sediment/rock; File content; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Manganese nodules, relative volume; Manganese nodules, volume; MARUM; MUC-24; Multicorer with television; Number of slice; Number of voxels, matrix sediment; Sediment, bioturbated lower layer, relative volume; Sediment, bioturbated lower layer, volume; Sediment, homogenized upper layer, relative volume; Sediment, homogenized upper layer, volume; SO268/2; SO268/2_122-1; Sonne_2; TVMUC; X-ray attenuation, matrix sediment, mean; X-ray attenuation, matrix sediment, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 9480 data points
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    DATA PANGAEA
  • 10
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    Computed tomography analysis of multicorer SO268/2_107-1, core 11 (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-23
    Description: Selected multicorer cores of R/V Sonne cruise SO268-2 were scanned by a Toshiba Aquilion 64 computer tomograph (CT) at the hospital Klinikum Bremen-Mitte with an x-ray source voltage of 120 kV and a current of 600 mA. The CT image stacks have a resolution of 0.35 mm in x/y-direction and 0.5 mm resolution in z-direction (0.3 mm reconstruction unit). Images were reconstructed using Toshiba's patented helical cone beam reconstruction technique (TCOT) and are provided in DICOM-format. The data were processed with the ZIB edition of the Amira software (version 2021.03; Stalling et al., 2005; http://amira.zib.de). Within Amira, the core liners, including about 2 mm of the core rims, were deleted from the data set. Mangan nodules with diameters 〉~1 mm, open bioturbation traces, an unidentified organism (only present in core SO268-2-200-1 MC18), the natural bioturbated and surficial homogenised sediment were segmented by a marker-based watershed segmentation and visualized in 3D. Subsequently, the sediment components were quantified (MaterialStatistics module; volume per slice) and the mean and standard deviation of the sediment x-ray attenuation (MaterialStatistics module; statistics per slice per label; to avoid marginal averaging effects the sediment label was reduced by three voxels) were determined.
    Keywords: Binary Object; Bioturbation; Bioturbation, volume; Center for Marine Environmental Sciences; Clarion-Clipperton Fraction Zone, North East Pacific Ocean; Computer tomography (CT) Toshiba Aquilion 64; DEPTH, sediment/rock; File content; JPI Oceans - Ecological Aspects of Deep-Sea Mining; JPIO-MiningImpact; Manganese nodules, relative volume; Manganese nodules, volume; MARUM; MUC; MUC-23; MultiCorer; Number of slice; Number of voxels, matrix sediment; Sediment, bioturbated lower layer, relative volume; Sediment, bioturbated lower layer, volume; Sediment, homogenized upper layer, relative volume; Sediment, homogenized upper layer, volume; SO268/2; SO268/2_107-1; Sonne_2; X-ray attenuation, matrix sediment, mean; X-ray attenuation, matrix sediment, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 10420 data points
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    DATA PANGAEA
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