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L'occupation de la haute montagne dans les Alpes occidentales. Apport de l'archéologie et des analyses paléoenvironnementales
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RBINS Staff Publications 2018
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Avances en la filogenia y biogeografía de esponjas marinas del Pacífico Sureste
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RBINS Staff Publications 2021
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Monitoring the trade in exotic animal products through DNA barcoding of passenger-imported meat
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The INTERCEPT-project seeks to propose a robust framework for the long-term monitoring of (exotic) animal product imports into Belgium, highlighting the legal and illegal aspects of the trade and its implications for public and animal health. INTERCEPT aims to move towards a centralised database by integrating data from various federal services and agencies to gain a better overview of the trade and to promote the dissemination of crucial information among federal services, agencies, and stakeholders. The project also aims to introduce a secure and efficient sampling method for officials, along with a laboratory species identification pipeline by researchers, which will enable rapid DNA-based identification of illegally imported meat. During the project, meat intercepted from passengers luggage at Brussels Airport is sampled, identified using DNA barcoding and screened for pathogens. At present, 424 specimens have been sampled, of which 315 have been identified so far. About 40% were derived from non-domesticated species, including meat from 10 CITES-listed species. Among the seized wild meat samples, greater cane rat (Thryonomys swinderianus) and African brush-tailed porcupine (Atherurus africanus) were predominant. Six specimens (5%) were misidentified as domestic meat upon seizure, while DNA analyses revealed a wild species. Inversely, twelve specimens (6%) were misidentified as wild meat, while DNA analyses revealed a domestic species. By fostering collaboration among scientific institutions and federal agencies, this initiative aims to inform border control measures, and will support future research into diseases carried by both domestic and exotic meat, allowing better characterisation of the health risks associated with the illegal import of meat from third countries.
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RBINS Staff Publications 2024
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Exploring Hidden Biodiversity: A Diptera Survey in Rural Eastern Slovakia
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RBINS Staff Publications 2024
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Latest Cretaceous hadrosauroid (Dinosauria: Ornithopoda) remains from Bulgaria
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RBINS Staff Publications
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First virtual endocasts of two Paleocene arctocyonids: a glimpse into the behavior of early placental mammals after the end-Cretaceous extinction
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Placentals are by far the most diverse group of mammals today, with 6,111 species. They occupy a plethora of ecological niches worldwide and display a broad range of body masses. The vacant niches left by non-avian dinosaurs and other vertebrates after the end-Cretaceous mass extinction provided a crucial opportunity for placentals to diversify; however, intrinsic factors also may have played a role. The general neurosensory organization exhibited by extant mammals has been maintained since the early Mesozoic. Much later, early members of extant placental groups from the Eocene and Oligocene including rodents, primates and artiodactyls—display neurosensory innovations such as a proportionally larger neocortex and higher encephalization quotient compared to their Mesozoic ancestors. However, between these two well-known intervals of mammalian neurosensory evolution, there is a gap: few studies have focused on the brains of the oldest placentals living during the early Paleogene, in the Paleocene. We focus on the ‘Arctocyonidae’, a likely polyphyletic group of ‘condylarths’, including species potentially implicated in the origins of some extant orders. ‘Arctocyonids’ were among the first placentals to diversify after the end-Cretaceous extinction. They have been reconstructed as small-tomedium sized, mainly omnivorous and terrestrial. We obtained cranial and bony labyrinth endocasts for Chriacus baldwini and C. pelvidens from the lower Paleocene of the San Juan Basin, New Mexico, and Arctocyon primaevus from the upper Paleocene of the Paris Basin, France, via high resolution computed tomography. Both share plesiomorphic brain features with previously described early Paleocene mammals. They have small lissencephalic brains with an EQ range of 0.12-0.43 and 0.16-0.31, respectively. The olfactory bulbs and the paraflocculi represent 6% and less than 1% of the total endocranial volume, respectively and the neocortical height ratio represents ~25% of the total endocranial height. Based on cochlear measurements, both taxa had hearing capabilities similar to those of extant wild boars. Agility scores between 2 and 3 were obtained for both taxa, similar to the modern American badger and crab-eating raccoon, suggesting that C. pelvidens and A. primaevus were ambulatory. These results support growing evidence that early placentals had lower EQs and less expanded neocortices compared to Eocene and later taxa, potentially indicating that high intelligence was not key to the placental radiation after the End-Cretaceous extinction. Grant Information: Marie Sklodowska-Curie Actions: Individual Fellowship, European Research Council Starting Grant, National Science Foundation, and Belgian Science Policy Office.
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RBINS Staff Publications 2019
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Paleocene and Eocene bird assemblage from the Southern North Sea Basin
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Numerous bird bones from the Paleocene and early Eocene of the Belgian and Paris basins have been collected by amateur paleontologists. Four bones from the early-middle Selandian of Maret, Belgium are among the earliest Cenozoic avian remains from Europe and include the oldest temporally well constrained records of the Gastornithidae, as well as tentative records of the paleognathous Lithornithidae and the Ralloidea. Another assemblage from the middle Thanetian of Templeuve, France contains multiple bones of the Lithornithidae as well as a record of the Pelagornithidae. Specimens from the latest Thanetian of Rivecourt-Petit Pâtis, France are tentatively assigned to the Ralloidea and Leptosomiformes. An assemblage of 54 bones from the middle Ypresian of Egem, Belgium represents at least 20 species in more than 11 higher-level taxa. Well-identifiable specimens are assigned to the Odontopterygiformes, Galliformes, Messelornithidae, Apodiformes, Halcyornithidae, Leptosomiformes, and Coraciiformes. Further specimens are tentatively referred to the phaethontiform Prophaethontidae and to the Accipitridae, Masillaraptoridae, and Alcediniformes. These three-dimensionally preserved fossils provide new data on the osteology of taxa that are otherwise mainly known from compression fossils with crushed bones. They also further knowledge of the composition of early Paleogene avifaunas of the North Sea Basin. Paleocene avifaunas of Europe and North America appear to have had different compositions and only a few taxa, such as the paleognathous Lithornithidae, are known from both continents. This suggests that the very similar early Eocene avifaunas of Europe and North America are the result of early Cenozoic dispersal events. The well-represented small galliform species from Egem most closely resembles Argillipes aurorum, an ignored galliform species from the London Clay. The tentatively identified fossils of Accipitridae and Alcediniformes would represent the earliest fossil records of these clades. The birds from Egem include few seabirds (Odontopterygiformes, cf. Prophaethontidae) and is dominated by terrestrial species (Galliformes, Messelornithidae). Arboreal birds (Halcyornithidae, Leptosomiformes, cf. Alcediniformes, Coraciiformes) are less abundant and aerial insectivores (Apodiformes) very scarce, which either indicates a taphonomic bias in the composition of the avifauna or particular paleoenvironmental characteristics of the nearshore habitats in that area of the southern North Sea Basin. Grant Information: Funded by Belgian Science Policy Office (project BR/121/A3/PalEurAfrica).
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RBINS Staff Publications 2019
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Critical analysis of the carnivoran mammal success in Europe during the Paleogene
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Why are we surrounded by only one group of placental carnivorous mammals (Carnivora: the presentday lions, dogs, bears, and seals among others) today, while at least three other groups of placental mammals (Hyaenodonta, Mesonychia, Oxyaenidae) were in competition with carnivorans 50 million years ago? Since the 1990s, palaeontologists have investigated the success of carnivoraform mammals (including Carnivora) and their crucial adaptations in detail. Analysis of the taxonomic and morphological diversification of these groups in the North American fossil record clearly demonstrated that carnivoraforms outcompeted hyaenodonts and oxyaenids during the Eocene, specifically from around 50 Ma onwards. We document the evolutionary history of the taxonomic diversity as well as the evolution of the body mass of carnivorous mammals that lived in Europe during the Paleogene (66–23 Ma). The results suggest that this competition was diametrically opposed in North America and Europe. Carnivoraforms actually did not become diversified in Europe during the Eocene and thus were not as taxonomically successful in Europe as in North America during that period. Moreover, during the Eocene, European hyaenodonts varied more in body mass than carnivoraforms. The situation dramatically changed during the 'Grande Coupure' (around Eocene–Oligocene boundary; ca. 33.9 Ma). This transition corresponds to a major faunal turnover in Europe: during the earliest Oligocene global cooling event (Oi-1), the Eocene endemic carnivorous fauna was replaced by immigrant taxa (hyaenodonts and carnivorans), mainly from Asia. This abstract is a contribution to the Belspo Brain Pioneer project BR/175/PI/CARNAGES funded by the Belgian Science Policy Office.
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RBINS Staff Publications 2019
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Cambaytherium, most primitive known perissodactylamorph (early Eocene of India), and the origin of the mammalian order Perissodactyla
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Cambaytherium is a primitive, perissodactyl-like mammal from the early Eocene Cambay Shale Formation of Gujarat, India, discovered 15 years ago. There are now more than 350 specimens of Cambaytherium, representing almost the entire dentition and skeleton. Its unique combination of plesiomorphic anatomical traits typical of archaic ungulates like phenacodontids, and derived traits that characterize early perissodactyls, offers important new insight into the expected anatomy of the common ancestor of Perissodactyla as well as the geographic center of origin of the order. Cambaytherium was a subcursorial animal better adapted for running than phenacodontids but less specialized than basal perissodactyls. Its cheek teeth are bunodont with large upper molar conules, not lophodont as in early perissodactyls; but as in perissodactyls, the lower molars have twinned metaconids and m3 has an extended hypoconulid lobe. A steep wear gradient with heavy wear in the middle of the tooth-row, and at the bases of the canines, suggests an abrasive herbivorous diet. We recognize three species of Cambaytherium: C. thewissi (~23 kg), C. gracilis (~10 kg), and C. marinus (~99 kg). Body masses were estimated from tooth size and long bone dimensions. Biostratigraphic and isotopic evidence indicate an age of c. 54.5 Ma for the Cambay Shale vertebrate fauna (the oldest continental vertebrate assemblage from India), near or prior to the initial collision with Asia. Cambaytheriidae (also including Nakusia and Perissobune) and Anthracobunidae are sister taxa, composing the clade Anthracobunia, which is the sister group of Perissodactyla. They comprise a new higher taxon, Perissodactylamorpha. Occurrence of its most primitive known member, Cambaytherium, in India suggests that Perissodactyla evolved during the Paleocene either in India or in peripheral areas of southern or southwestern Asia. Where Cambaytherium evolved, and how and when it reached India, remain unresolved. Supported by National Geographic Society, Leakey Foundation, U.S. NSF, Government of India, Wadia Institute of Himalayan Geology, Belgian Science Policy Office, and Alexander von Humboldt Foundation.
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RBINS Staff Publications 2019
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Dinoflagellate cyst biostratigraphical and palaeoecological analysis of the early Paleogene Landana reference section, Cabinda Province, Angola
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Systematic palynological analysis of the Landana section has revealed 90 distinct dinoflagellate cyst taxa and has resulted in the establishment of a novel preliminary dinoflagellate cyst zonation. The zonation comprises three distinct dinoflagellate cyst zones and five unzoned, yet otherwise distinct intervals, spanning the ?Danian/early Selandian to Eocene/early Oligocene. The Landana record, which represents the first extensive sub-equatorial African Paleogene dinoflagellate cyst record, was extensively compared and correlated with contemporaneous records relatively close by in the Gulf of Guinea, as well as with records from more distant locations such as Antarctica, Australia and New Zealand. The ?Danian–Selandian segment of the record is characterized by the presence of taxa such as Alterbidinium? pentaradiatum, Isabelidinium? viborgense, Isabelidinium cingulatum and Spinidinium densispinatum. The Thanetian through Ypresian succession is far more fragmentary and is devoid of any significant marker taxa. The few dinoflagellate cyst-bearing samples in the uppermost part of the record point to an Eocene to early Oligocene age. The dinoflagellate cyst assemblages are very variable, with several dinoflagellate cyst taxa and ecological groups and complexes rising to dominance successively. Overall high TOC values, significant enhancements in %TP and intervals dominated by presumably heterotrophic dinoflagellate cysts, suggest periods of significant palaeoproductivity and nutrient availability resulting from either heightened terrestrial influence or enhanced upwelling. The overall dinoflagellate cyst assemblages concur with the recorded marine vertebrate faunas and the available sedimentological data that point to a coastal/shallow marine setting for the ?Danian–Ypresian succession. This work was supported by the Belgian Science Policy Office under Grant BR/121/A3/PALEURAFRICA.
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RBINS Staff Publications 2019
