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New data on flies from saltmarshes from the Reserva natural de s’Albufereta and the Natural Park of s’Albufera (Mallorca, Balearic Islands, Spain) with the description of a new species of Drapetis Meigen (Diptera: Hybotidae, Tachydromiinae)
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RBINS Staff Publications 2024
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New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888)
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RBINS Staff Publications 2022
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New Drapetis Meigen from Bulgaria (Diptera: Hybotidae)
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RBINS Staff Publications 2024
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New evidence of the emergence of the East Asian monsoon in the early Palaeogene
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Previous palaeoenvironmental reconstructions have implied that East Asia was dominated by a zonal climate pattern during the Eocene, with an almost latitudinal arid/semiarid band at ~ 30° N. However, this long-standing model has recently been challenged by growing body of multidisciplinary evidence. Some studies indicated that central China was characterized by climatic fluctuations between humid and drier conditions during the Early Eocene, akin to the present East Asian monsoon (EAM) regime. Using palynological assemblages in the Tantou Basin, central China, we quantitatively reconstructed climate changes from the Late Palaeocene to Early Eocene to better understand climate change in central China. Palynological assemblages revealed that the coniferous and broad-leaved mixed forest in this area received no less than 800 mm of annual precipitation and experienced a climate change from warm and wet to relatively cool and dry. According to palaeoclimate curves, a sudden climate change occurred in the Early Eocene, with the mean annual temperature and precipitation decreasing by 5.1 °C and 214.8 mm, respectively, and the climate became very similar to the present climate, which is controlled by the monsoon. Therefore, this significant climate change during the Early Eocene may signal the emergence of the EAM in East Asia.
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RBINS Staff Publications 2022 OA
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New Holothuria species from Australia (Echinodermata: Holothuriidae), with comments on the origin of deep and cool holothuriids.
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Two aspidochirotid species, new to science, from the continental slope of southern Australia are described: Holothuria (Panningothuria) austrinabassa O’Loughlin sp. nov. and Holothuria (Halodeima) nigralutea O’Loughlin sp. nov. The first represents the southernmost documented holothuriid, and is the sister species of the northernmost holothuriid species Holothuria (Panningothuria) forskali Delle Chiaje. The second is a very recent offshoot of the wide-ranging Indo- west Pacific Holothuria (Halodeima) edulis Lesson. Morphological and molecular genetic differences between these species pairs are detailed. Holothuria (Halodeima) signata Ludwig is raised out of synonymy with H. edulis.A lectotype for Holothuria (Halodeima) signata Ludwig is designated, The status of the subgenera Panningothuria Rowe and Halodeima Pearson is discussed. The occurrence of multiple madreporites in Halodeima is discussed.
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RBINS Staff Publications
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New insights into near-bed SPM concentration and sand/mud fraction in the use of Sediment Composition Index
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RBINS Staff Publications 2024
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New linguliformean brachiopods from the lower Tremadocian (Ordovician) of the Brabant Massif, Belgium, with comments on contemporaneous faunas from the Stavelot–Venn Massif.
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RBINS Staff Publications 2021
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New long-legged flies from mangroves on Pulau Ubin (Singapore) (Insecta: Diptera: Dolichopodidae)
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RBINS Staff Publications 2024
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New material of the small raoellid artiodactyl Metkatius kashmiriensis Kumar and Sahni, 1985 (Mammalia) from the middle Eocene of the Kalakot area, Rajouri District, Jammu and Kashmir, India
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New material of the small raoellid artiodactyl Metkatius kashmiriensis is reported from the middle Eocene of the Upper Subathu Formation in the Kalakot area, Jammu and Kashmir, northwest Himalaya, India. The fossil material consists of numerous mandibular and maxillary fragments and isolated teeth, mainly belonging to juvenile specimens. It documents the poorly known dental morphology of M. kashmiriensis and provides an overview of its intraspecific variation, allowing to redefine its diagnosis. M. kashmiriensis is characterized by a particularly small size compared with other raoellid species, and by bunodont molars with moderately marked transverse lophs. The M/1–2 are much longer than wide and display characters similar to those of Rajouria gunnelli, such as the presence of a small paraconid and a mesial mesiostylid. The P/4 bears distally a small hypoconid, which appears to be unique in Raoellidae. The description of the new material also allows to document the poorly known morphology of the deciduous teeth of raoellids. The DP2/ is reported for the first time, and the DP/4 of M. kashmiriensis shows a morphology different from that of Indohyus, with the absence of mesial basin anterior to the paraconid and the primoconid. Contrary to what has recently been proposed, these results confirm that M. kashmiriensis is a valid species and not a synonym of Indohyus indirae, and highlight the great morphological diversity present within the Raoellidae during the middle Eocene in the Indian subcontinent.
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RBINS Staff Publications 2024 OA
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New mtDNA and Isotopic Evidence on Late Pleistocene Cave Bears in the Balkans: the Case-study of Magura Cave, NW Bulgaria
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Recent genetic studies have shed light on the phylogeography of cave bears; however, their paleoecology and their diet are still debated, and data from south-eastern Europe are still scarce. Magura Cave, in northwest Bulgaria, has delivered rich faunal assemblages from the Late Pleistocene. The chronology of the excavated area spans from ca. 35 kya to more than 50 kya; the oldest stratigraphic layers being associated with final Middle Palaeolithic tools. The fauna comprises herbivores and carnivores, and potentially different taxa of cave bears, the dental remains of which also showed different tooth morphotypes, suggesting the co-existence of different dietary adaptations. We investigated the mitochondrial DNA (mtDNA) lineages of the cave bears from Magura Cave as well as the stable carbon and nitrogen isotope composition of the faunal assemblage. Our data revealed that, regardless of the tooth morphotypes, only maternal lineages of Ursus ingressus were present in Magura Cave. Interestingly, one specimen with Ursus arctos mtDNA was also found, showing a clear carnivore diet. In contrast, the U. ingressus specimens had a predominantly herbivorous diet. The tooth morphotypes were associated with significantly different δ13C values, suggesting different dietary adaptations.
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RBINS Staff Publications 2020