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The contribution if Jan H. Stock to the origin and biodiversity of subterranean aquatic crustaceans (an introduction to the Jan H. Stock memorial Syposium's theme)
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RBINS Staff Publications
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The Cordex.be initiative as a foundation for climate services in Belgium
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RBINS Staff Publications 2018
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The cost of CO2 geological storage is more than a number
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CO2 geological storage is the last stage in the CO2 capture and storage process which aims to reduce CO2 emissions into the atmosphere. The cost of storage has frequently been regarded as minor compared to the cost of the whole CCS process. There are however a multitude of cost parameters that will form a unique combination for each storage project, with costs projected from one to several tens of euros per tonne of CO2 stored. Several research efforts have lately been identifying the main cost drivers and relatively wide cost ranges. Reservoir type and location, geological uncertainty, injectivity and capacity are recognised as the main source of cost variation between potential storage projects.
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The creodonts (mammalia, Ferae) from the Paleocene-Eocene transition in Belgium (Tienen Formation, MP7)
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Study of the dental remains of creodont mammals from the Paleocene-Eocene transition in Belgium (Tienen Formation, reference-level MP7) allows seven species to be recognized, four of which belong to the family Hyaenodontidae and three to the Oxyaenidae. The four hyaenodontid species, which are new to science, present numerous symplesiomorphic characteristics. They represent the oldest hyaenodontids of northern Europe and are shown to be the most primitive representatives of the sub-family Hyaenodontinae known so far. They are closely related to the oldest North American species but the morphological differences between them demonstrate that they are not vicariant species. Thus, the Belgian species could be at the origin of the American hyaenodontid lineages or belong to lineages already distinct but recently differentiated from common ancestors slightly older than both of these species groups. As for oxyaenids, their dental morphology shows that they could originate from the North American Paleocene lineages, although their small size does not support this hypothesis. The smallest Belgian creodont, Prototomus minimus n. sp. is remarkable in that it may present sexual dimorphism in mandibular morphology.
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RBINS Staff Publications
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The Cretaceous-Palaeogene (K/P) boundary in the Aïn Settara section (Kalaat Senan, Central Tunisia): lithological, micropalaeontological and geochemical evidence.
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The Dababiya Corehole, Upper Nile Valley, Egypt: Preliminary results.
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The Dababiya corehole was drilled in the Dababiya Quarry (Upper Nile Valley, Egypt), adjacent to the GSSP for the Paleocene/ Eocene boundary, to a total depth of 140 m and bottomed in the lower Maastrichtian Globotruncana aegyptiaca Zone of the Dakhla Shale Formation. Preliminary integrated studies on calcareous plankton (foraminifera, nannoplankton), benthic foraminifera, dinoflagellates, ammonites, geochemistry, clay mineralogy and geophysical logging indicate that: 1) The K/P boundary lies between 80.4 and 80.2 m, the Danian/Selandian boundary between ~ 41 and 43 m, the Selandian/Thanetian boundary at ~ 30 m (within the mid-part of the Tarawan Chalk) and the Paleocene/Eocene boundary at 11.75 m (base [planktonic foraminifera] Zone E1 and [calcareous nannoplankton] Zone NP9b); 2) the Dababiya Quarry Member (=Paleocene/Eocene Thermal Maximum interval) extends from 11.75 to 9.5 m, which is ~1 m less than in the adjacent GSSP outcrop.; 3) the Late Cretaceous (Maastrichtian) depositional environment was nearshore, tropical-sub tropical and nutrient rich; the latest Maastrichtian somewhat more restricted (coastal); and the early Danian cooler, low(er) salinity with increasing warmth and depth of water (i.e., more open water); 4) the Paleocene is further characterized by outer shelf (~ 200 m), warm water environments as supported by foraminifera P/B ratios > 85% (~79-28 m), whereas benthic foraminifera dominate (>70%) from ~27-12 m (Tarawan Chalk and Hanadi Member) due, perhaps, in part to increased dissolution (as observed in nearby outcrop samples over this interval); 5) during the PETM, enhanced hydrodynamic conditions are inferred to have occurred on the sea-floor with increased river discharge (in agreement with sedimentologic evidence), itself a likely cause for very high enhanced biological productivity on the epicontinental shelf of Egypt; 6) correlation of in situ measured geophysical logs of Natural Gamma Ray (GR), Single-Point Resistance (PR), Self-Potential (SP), magnetic susceptibility(MS), and Resistivity, and Short Normal (SN) and Long Normal (LN) showed correspondence to the lithologic units. The Dababiya Quarry Member, in particular, is characterized by very high Gamma Ray and Resistivity Short Normal values.
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RBINS Staff Publications
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The Dababiya Quarry section: lithostratigraphy, clay mineralogy, geochemistry and paleontology.
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The DeepMIP contribution to PMIP4: methodologies for selection, compilation and analysis of latest Paleocene and early Eocene climate proxy data, incorporating version 0.1 of the DeepMIP database.
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RBINS Staff Publications 2019
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The delusion of stripes: A century-old mystery of five-lined sun skinks (Reptilia: Scincidae: Eutropis) of Peninsular India elucidated
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We re-evaluate the taxonomic identities of five-lined skinks of the genus Eutropis (E. trivittata, E. beddomei, E. nagarjunensis, and E. bibronii) inhabiting the Indian subcontinent. Previously it has been considered that E. trivittata is distributed in the western India and E. dissimilis in the northern India (from north-eastern India up to Pakistan). Based on our analysis, we revealed that the illustration (iconotype) of the untraceable type specimen of E. trivittata depicted by Hardwicke in Gray (1834) from “Dumdum” near Kolkata, West Bengal matches the typical E. dissimilis, also described from “Bengal”. The senior synonym, E. trivittata is a morphologically unique species, which is also supported by divergence in the mitochondrial 12S and 16S regions. E. trivittata is clearly separated with divergences of 5–7% from E. beddomei, E. vertebralis and E. nagarjunensis for 16S rRNA. After placing E. dissimilis with the synonymy of E. trivittata, the taxonomic status of the western Indian ‘E. trivittata’ required to be clarified. Therefore, we resurrect Mabuia vertebralis Boulenger, 1887, a junior synonym of western Indian E. trivittata, and redescribe its holotype collected from “Belgaum”, Karnataka. Although, morphologically closest to E. beddomei, Eutropis vertebralis comb. nov. is sister to E. nagarjunensis with divergence of 4% in the same mitochondrial regions. Based on our update of the currently confirmed localities for E. vertebralis comb. nov. and E. trivittata, we conducted Species Distribution Modelling (SDM) using the Maximum Entropy algorithm to predict its distribution range, and we discuss its conservation status.
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RBINS Staff Publications 2021
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The dercetid fishes (Teleostei, Aulopiformes) from the Maastrichtian (Late Cretaceous) of Belgium and The Netherlands
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Several partial skeletons from the marine Maastrichtian deposits of Belgium and the Netherlands allow to recognize four species of Dercetidae, two of which are new: Dercetis triqueter, Ophidercetis italiensis, Cyranichthys jagti sp. nov. and Apuliadercetis indeherbergei sp. nov. This newly studied material greatly enlarges the stratigraphic and paleogeographic ranges of the four concerned dercetid genera.
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RBINS Staff Publications
