Skip to content. | Skip to navigation

Personal tools

You are here: Home
1524 items matching your search terms.
Filter the results.
Item type



































New items since



Sort by relevance · date (newest first) · alphabetically
Article Reference Distribution and diversity of the cryptic ant genus Oxyepoecus (Hymenoptera: Formicidae: Myrmicinae) in Paraguay, with descriptions of two new species.
Located in Library / RBINS Staff Publications
Article Reference Differential response of ants to nutrient addition in a tropical Brown Food Web
Located in Library / RBINS Staff Publications
Article Reference Diversity of the adapisoriculid mammals from the early Palaeocene of Hainin, Belgium
Adapisoriculidae are an enigmatic group of small mammals known from the late Cretaceous of India, and from the early Palaeocene to early Eocene of Europe and Africa. Based on their primitive dental morphology, they have been classified as didelphids, nyctitheriids, leptictids, mixodectids, tupaiids, and palaeoryctids. While the latest hypothesis based on dental morphology suggests an affinity with Lipotyphla, postcranial remains indicate a close relationship with Euarchonta. Here, we present new adapisoriculid dental remains from the early Palaeocene locality of Hainin (Belgium). Adapisoriculidae are particularly abundant in Hainin, where they represent about one third of the mammalian fauna, offering new insights into both their specific and generic phylogenetic interrelationships. We describe three new species (Afrodon gheerbranti sp. nov., Bustylus folieae sp. nov. and Proremiculus lagnauxi gen. et sp. nov.) and document the previously unknown lower dentition of Bustylus marandati. The diversity of dental morphologies observed in the Hainin fauna suggests different interrelationships than previously suggested. In particular, the genus Proremiculus is considered morphologically intermediate between Afrodon and Remiculus, and the latter is no longer recognised as the sister group of Adapisoriculus. Although the highest diversity of adapisoriculids occurs in Europe, the oldest and most primitive members of the family were found in India and Africa, respectively. The geographic origin of the family could thus be located in any of these three continents, depending on the importance attributed to each of these factors. The coexistence of primitive and derived adapisoriculids at Hainin might indicate a very quick diversification in Europe, probably starting around the K−T boundary.
Located in Library / RBINS Staff Publications
Article Reference The creodonts (mammalia, Ferae) from the Paleocene-Eocene transition in Belgium (Tienen Formation, MP7)
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.
Located in Library / RBINS Staff Publications
Article Reference Mammals from the Paleocene-Eocene transition in Belgium (Tienen Formation, MP7): Paleobiogeographical and biostratigraphical implications
Located in Library / RBINS Staff Publications
Article Reference The Dormaal Sands and the Palaeocene/Eocene boundary in Belgium
Located in Library / RBINS Staff Publications
Article Reference Agaristoxylon garennicum Gerrienne et al., gen. et sp. nov. an arborescnet Ericacae from the Belgium Upper Paleocene: palaeoenvironmental implications
Located in Library / RBINS Staff Publications
Article Reference Les insectivores s.s. (Mammalia, Lipotyphla) de la transition Paléocène-Eocène de Dormaal (MP7, Belgique): implications biochronologiques et Paléogéographiques
Au moins sept espèces d'insectivores Lipotyphla appartenant à cinq genres et à trois familles sont présentes à Dormaal. Deux espèces de Remiculus, R. cf. deutschi et R. delsatei n. sp.. sont décrites ainsi que deux formes laissées en nomenclature ouverte. Les variabilités intraspécifiques de Macrocranion vandebroeki, M. germonpreae, Leptacodon dormaalensis et Wyonycteris richardi sont traitées et les comparaisons avec les insectivores des autres gisements europeens et américains, d'âge proche, sont réalisées et interprétees en termes de lignées évolutives. Les faunes américaines présentant le plus de similitudes avec celle de Dormaal sont les faunes de Willwood Formation (Wyoming) situées entre les niveaux du Clarkforkien 3 et du Wasatchien 1.
Located in Library / RBINS Staff Publications
Article Reference Mode de vie et affinités de Paschaterium (Condylarthra, Hyopsodontidae) d'après ses os du tarse
Les os du tarse de Paschatherium dolloi de Dormaal sont décrits et analysCs fonctionnellement. L'astragale possède une trochlée en poulie dissymétrique, une large cupule mediale pour la malléole du tibia, un col court. Le calcanéum a un tubercule péronéen bien développé et distal. Les facettes entre les deux os reflètent leur mobilité relative. L'ensemble des caractères indiquent une locomotion rapide, des mouvements de flexion-extension étendus et de fréquentes rotations du pied. Paschatherium est interprété comme un arboricole de type sciuridé. Les comparaisons effectuées avec le Macrocranion de Dormaal et un Hyopsodus nord-am6ricain montrent: des ressemblances partielles entre les astragales de Paschatherium et Macrocranion, probablement dues à des convergences fonctionnelles; une grande similitude des calcanéums de Paschatherium et Hyopsodus, indiquant probablement leur parenté. Nous confirmons le placement de Paschatherium dans les condylarthres hyopsodontidés. Les diff6rences entre les astragales de Paschatherium et Hyopsodus indiquent une divergence adaptative marquée entre les deux genres. Les ressemblances entre l'astragale de Paschatherium et celui des hyracoïdes nous font spéculer sur un possible scénario adaptatif concernant l'origine de ces derniers, scénario qui va à l'encontre du concept de Pantomesaxonia. Avec d'autres caractères. ces ressemblances pourraient suggérer une parenté des hyopsodontidés et des hyracoïdes (et téthythères).
Located in Library / RBINS Staff Publications
Article Reference Un bois silicifié de peuplier de la transition Paléocène-Eocène de Dormaal, Belgique
Located in Library / RBINS Staff Publications