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Book Reference Evolution et variabilité des dimensions dentaires chez Homo sapiens neanderthalensis
Located in Library / No RBINS Staff publications
Article Reference Reassessment of the small "arctocyonid" Prolatidens waudruae from the Early Paleocene of Belgium, and its phylogenetic relationships with ungulate-like mammals
‘Arctocyonids’ are generally considered as including some of the most primitive ‘ungulates’ from the Paleocene. Although more than 15 genera are known from North America, European members of this order are less common and mainly belong to derived genera such as Arctocyon. However, one species of primitive arctocyonid, Prolatidens waudruae, was described from the early Paleocene of Hainin, Mons Basin, Belgium. Here we describe new dental positions of this small taxon, including for the first time upper molars and upper fourth premolar. Morphological comparisons confirm the position of P. waudruae among primitive ‘ungulates,’ with the closest North American arctocyonids being Prothryptacodon furens and Oxyprimus galadrielae. Oxyprimus galadrielae features slightly more primitive morphological traits than both other species. Apheliscids share several characters with Prolatidens, but the latter lacks the apomorphies defining the family. Among ‘arctocyonids,’ Prolatidens shares with only Protungulatum and Oxyprimus the incomplete lingual cingulum at the base of the protocone of M1. Prolatidens waudruae is unique among Procreodi in its combination of primitive and derived characters. The cladistic analysis places P. waudruae close to the base of the ingroup, indicating that this species is among the most primitive members of the Paleocene ‘ungulates.’ However, the lower nodes of the trees are not well supported and definitive conclusions should await more complete specimens and analysis. Apheliscids are situated relatively far from Prolatidens, suggesting that the resemblances between them are better considered as convergences. Based on the morphological comparisons, the arctocyonid from Hainin correlates best with North American Torrejonian taxa.
Located in Library / RBINS Staff Publications
Article Reference A reassessment of the fossil goose Anser scaldii Lambrecht, 1933
The name Anser scaldii was first used by Van Beneden (1872) in a brief text that read ‘Nous avons recu un humérus dans un parfait état de conservation, trouvé dans le crag, à Anvers’. The name was also used by Van Beneden (1873), but in both instances it is a nomen nudum. The name was made valid for the purposes of nomenclature by Lambrecht (1933: 368) when he entered Anser scaldii Van Beneden, 1872, with the following description and information: ‘Humerus typisch anserin, von der Größe von Tadorna casarca. Länge 129 mm. Material: Humerus im Mus. Bruxelles. Alter und Fundort: Obermiozän (Bolderian), Antwerpen. Etymologie: Artname nach der Schelde: Scaldia.’ At the same time he mistakenly gave the original combination as Anas scaldii Van Beneden 1872, which error was perpetuated by Gaillard (1939), Brodkorb (1964), Howard (1964), and Bochenski (1997), as noted by Mlíkovský (2002: 125). The statement by Lambrecht that this fossil is of similar length to humeri of Tadorna prompted Worthy et al. (2007) to suggest that Anser scaldii may have a bearing on the evolution of Tadornini in Europe. Accordingly, we re- examined the holotype in the Department of Paleontology, Royal Belgian Institute of Natural Sciences, Brussels, Belgium, to ascertain its relationships and its significance in Anseriform evolution.
Located in Library / RBINS Staff Publications
Article Reference A mitochondrial phylogeographic scenario for the most widespread African rodent species , Mastomys natalensis
In order to evaluate the contribution of geological, environmental, and climatic changes to the spatial distri- bution of genetic variation of Mastomys natalensis, we analysed cytochrome b sequences from the whole dis- tribution area of the species to infer its phylogeographic structure and historical demography. Six well-supported phylogroups, differentiated during the Pleistocene, were evidenced. No significant correlation between genetic and geographic distances was found at the continental scale, and the geographic distributions of the observed phylogroups have resulted from extensive periods of isolation caused by the presence of putative geographic and ecological barriers. The diversification events were probably influenced by habitat contraction/expansion cycles that may have complemented topographic barriers to induce genetic drift and lineage sorting. According to our results, we propose a scenario where climate-driven processes may have played a primary role in the differ- entiation among phylogroups.
Located in Library / RBINS Staff Publications
Article Reference High-resolution carbon isotope stratigraphy and mammalian faunal change at the Paleocene-Eocene boundary in the Honeycombs area of the Southern Bighorn Basin, Wyoming.
Located in Library / RBINS Staff Publications
Article Reference Rapid Asia–Europe–North America geographic dispersal of earliest Eocene primate Teilhardina during the Paleocene–Eocene Thermal Maximum
Located in Library / RBINS Staff Publications
Article Reference A new scincomorph lizard from the Paleocene of Belgium and the origin of the Scincoidea in Europe
Located in Library / RBINS Staff Publications
Article Reference Anatomy and phylogeny of the gavialoid crocodylian Eosuchus lerichei from the Paleocene of Europe
Located in Library / RBINS Staff Publications
Article Reference Les mammifères de l'Ypresien moyen du Bassin de Paris (niveau-repère MP8-9) sont-ils présents dès la limite Paléocène/Eocène de Dormaal (niveau-repère MP7, Belgique)?
Located in Library / RBINS Staff Publications
Article Reference Paleocene-Eocene carbon isoltope excursion in organic carbon and pedogenic carbonate: direct comparision in a continental stratigraphic section
Located in Library / RBINS Staff Publications