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Article Reference Leptacodon dormaalensis (Mammalia, Lipotyphla), un nyctithère primitif de la transition Paléocène-Eocène de Belgique
Gypsonictops dormaalensis Quinet, 1964, décrit à l'origine à partir d'une unique P4/, est attribué au genre Leptucodon. L'espèce L. clormaalensis est redécrite sur la base de fragments mandibulaires et de dents jugales isolées provenant du Landénien supérieur de Dormaal (Belgique), près de la limite Paléocène-Eocéne. La comparaison du Leptacodon belge avec les autres espèces du genre indique que celui-ci est proche de l'espèce-îype L. tener Matthew & Granger, 1921 et semble posséder avec ce dernier. ainsi que L. rosei Gingerich, 1987, les caractères morphologiques les plus primitifs des nyctithères. La phylogénie du genre Leptucodon est également discutée et le genre Plc~gioctenodon Bown, 1979 est considéré comme synonyme du genre Leptacodon.
Located in Library / RBINS Staff Publications
Article Reference Diacodexis gigasei n. sp., le plus ancien Artiodactyle (Mammalia) belge, proche de la limite Paléocène-Eocène
Les données acquises au cours de fouilles récentes ainsi que la mise en commun du matériel de plusieurs collections du gisement de Dormaal (localitt de référence du Niveau-Repère MP 7) ont permis de rassembler une douzaine de dents jugales de Diacodrxis. L'étude de ce matériel et sa comparaison avec diverses espèces primitives de Diacodrxis de I'Eocène inftrieur d'Europe, d'Amtrique du Nord et d'Asie ont permis de définir la nouvelle espèce, Diacodexis gigasri. Une position phylogénttique est proposée pour cette nouvelle espèce.
Located in Library / RBINS Staff Publications
Article Reference Présence du genre Wyonycteris (Mammalia, Lipotyphla) à la limite Paléocène-Eocène en Europe
A new species of insectivore, Wyonycteris richardi, is described on the basis of mandible fragments and isolated cheek teeth of the Early Eocene from Dormaal (Belgium), at the Paleocene-Eocene boundary. Nycticonodon and ?Adapisoriculus from Dormaal, and cf. Adapisoriculus from Fordones (France) are considered synonymous with the genus Wyonycteris from Wyoming (USA). Wyonycteris appears to be neither a typical bat nor a nyctitheriid but probably is related to evolved adapisoriculids.
Located in Library / RBINS Staff Publications
Article Reference On the use of endosteal layers and medullary bone from domestic fowl in archaeozoological studies
The very high incidence of medullary bone in two archaeozoological assemblages of the Roman period was believed to reflect systematic slaughtering of older hens at the end of the egg laying season. In an attempt to test this hypothesis, histological analyses were carried out. Histological data in the literature on ageing of modern fowl and on the development of medullary bone in hens are insufficient for application to archaeozoological material. Bones of modern fowl of known age were analysed with the aim of validating the use of endosteal layers for ageing. In addition, hens with known egg laying stage were studied in order to try and document differences in medullary bone development that could be related to the time of slaughtering (just before, during, or just after the egg laying season).
Located in Library / RBINS Staff Publications
Article Reference Description of a new species of Lataxiena (Gastropoda: Muricidae) from India
A new species of the genus Lataxiena is described from Madras, India, with range extension to Thailand, strait of Malacca.
Located in Library / RBINS Staff Publications
Article Reference A second remarkable slug and a thin-shelled Trochonanina snail from the Udzungwa Mountains, Tanzania (Stylommatophora: Helicarionoidea: Urocyclidae)
Located in Library / RBINS Staff Publications
Inbook Reference Chapter 2. Systematics and paleobiogeography of early bats
no abstract
Located in Library / RBINS Staff Publications
Article Reference Reappraisal of the morphology and phylogenetic relationships of the middle Eocene alligatoroidDiplocynodondeponiae (Frey, Laemmert and Riess, 1987) based on a 3D-prepared specimen
We describe a three-dimensionally prepared specimen of Baryphracta deponiae from the middle Eocene of Messel (Darmstadt, Germany). Based on a phylogenetic analysis that included the addition of 20 novel scorings for characters previously unavailable for this taxon and the recoding of four additional characters, we found B. deponiae to be nested within Diplocynodon.We propose the new combination Diplocynodon deponiae. The name Baryphracta is thus a junior synonym of Diplocynodon. The small species D. deponiae (∼1 m in total length) shares several features with other species of Diplocynodon, including the presence of two subequal alveoli in the maxilla and dentary, exclusion of the splenial from the symphysis, and the shape of the iliac blade. However, it also differs in a few characters, including the presence of molariform teeth and the extension of osteoderms along the limbs and tail. Such osteodermal cover, which developed very early in ontogeny, easily distinguishes even small-sized specimens of D. deponiae from the co-occurring Diplocynodon darwini. The crocodylian fauna of Messel shows an astonishing diversity including at least seven taxa, with two belonging to the same genus. The two congeners exhibit differences in dentition and size that likely allowed for niche partitioning that minimized competition, thereby allowing them to be syntopic.
Located in Library / RBINS Staff Publications
Article Reference Reassessment of the Morphology and Taxonomic Status of the earliest Herpetotheriid Marsupials of Europe
The earliest Eocene locality of Dormaal (Belgium) has provided the oldest Cenozoic herpetotheriid marsupials of Europe. No herpetotheriid has ever been reported earlier than the Eocene in Europe, except for a questionable single upper molar from the Upper Cretaceous of the Belgian/Dutch border. The systematics of the herpetotheriids of Dormaal was formerly based on only a dozen dental specimens, which were assigned, after several revisions, to two species Peratherium constans and Amphiperatherium brabantense. Most importantly, these two species were considered at the root of most of the hepetotheriid lineages of the European Paleogene. Here we report a large sample of about 400 new dental remains that allow a better definition of both species as well as a testing of their systematic status. The evidence of significant morphological variability leads us to reconsider the diagnosis of Peratherium constans and to question the validity of Amphiperatherium brabantense. This study highlights that the primitive species Peratherium constans and Amphiperatherium brabantense are hardly distinguishable from each other, and therefore conclude that Peratherium constans was the only marsupial present at Dormaal. The important morphological variation exhibited by this herpetotheriid is similar to the variability observed in the type-species Peratherium elegans and in other fossil and extant metatherians. Consequently, our results suggest that several Amphiperatherium species from the Eocene could represent variants of the genus Peratherium. The question of the Amphiperatherium presence in Europe is therefore raised and a thorough discriminate analysis of both genera should be conducted in later works.
Located in Library / RBINS Staff Publications
Article Reference Phylogenetic affinities and taxonomic composition of the Oligocene Diomedeoididae, and the basal divergences among extant Procellariiformes (Aves)
The Palaeogene Diomedeoididae are amongst the earliest representatives of procellariiform birds (albatrosses, tubenoses, and allies). Although several fossils of these birds have been reported in the past, many details of their osteology remained unknown. Here we describe a comprehensive collection of diomedeoidid fossils from the Rupelian stratotype in Belgium, which was found more than 100 years ago. The material includes all major limb elements as well as other cranial and postcranial bones, and allows the recognition of previously unknown features of phylogenetic significance. Based on these new osteological data, diomedeoidids were for the first time subjected to a phylogenetic analysis, which resulted in a position outside a clade including Hydrobatidae (northern storm-petrels), Pelecanoididae (diving-petrels), and Procellariidae (fulmars, petrels, shearwaters, and allies), either as the sister taxon of Diomedeidae (albatrosses) or as that of all crown group Procellariiformes. The latter placement is better supported by the osteological evidence, and diomedeoidids lack several apomorphies of crown group Procellariiformes. Previously unrecognized derived features are reported that support a monophyletic Hydrobatidae, thus contradicting recent proposals that Oceanitinae (southern storm-petrels) are the earliest diverging crown group Procellariiformes. The new fossils also have a bearing on the convoluted taxonomy of diomedeoidids, and Diomedeoides Fischer, 1985 is synonymized with Rupelornis van Beneden, 1871. Diomedeoides lipsiensis (Fischer, 1983) is synonymous with Rupelornis definitus (van Beneden, 1871), a species that exhibits a large size range.
Located in Library / RBINS Staff Publications