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Typological, technological and functional analyses of Mousterian points.
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Spy cave provided the most important number of Mousterian points in Belgium. Most of them were found in the “second fauna-bearing level” (De Puydt & Lohest, 1887) and are stored at the Grand Curtius Museum in Liège (De Puydt collection). They revealed morphological particularities and a remarkable similarity that encouraged a more detailed techno-morpho-functional analysis. Their good state of preservation allowed us to observe macro-traces and sometimes microwear polishes
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Radiocarbon dating of human remains and associated archaeological material
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The Neandertal skeletal material from Spy cave has finally been directly dated by AMS 14C one hundred twenty-five years following their discovery. Fifteen human bones and teeth were dated in order to verify new morphological analyses and determine the age of the Spy Neandertals. Collagen from 14 faunal remains and three bone or ivory artefacts were also dated in order to establish a radiocarbon framework for the three “fauna-bearing levels” defined by the original excavators. Apart from several dates that are clearly too young due to contamination or diagenetic influences, our results show that the three oldest dates (ca. 36,000 uncal BP) for the two Neandertal adults are reliable given that the quality parameters are within the accepted confidence interval. We discuss the results of these new dates and their significance in light of the site's stratigraphy, the local Belgian context, and the wider European framework. Radiocarbon dating of Neolithic human skeletal material is also presented and discussed.
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The fossil mammals of Spy.
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The large faunal sample from Spy, a Belgian cave site famous for its Neandertal remains, is for the first time studied in detail. Some 11,600 bones were examined. A wide spectrum of Pleistocene species is present. Horse, cave hyena, mammoth, woolly rhinoceros and reindeer are the primary taxa. Hyena scavenging activities are indicated by the gnawed mammoth and rhinoceros postcranial bones and cervid antlers. Bears used the cave as a hibernation den evidenced by remains of cubs, and of female and male adult bears. Indications of human manipulation (cut marks, ochre traces, worked bone/tooth) occur especially on remains from foxes, mammoth and deer. The age profile of the mammoth is dominated by calves. This selective mortality suggests that they were hunted by prehistoric people. AMS dates range from c. 44,400 BP to c. 25,700 BP. The Spy bone assemblage therefore accumulated through a series of agents over a long period of the Pleniglacial.
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Stable isotopes.
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Comparing 3D digitizing technologies: what are the differences?
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We tested five 3D digitization systems and one method of 2D+ recording on one object: a human skull from the Royal Belgian Institute of Natural Sciences collection (RBINS). We chose a skull because it has both simple and complex structures and different materials such as bone and enamel within the same object. The results obtained with the different technologies were compared for 3D shape accuracy, texture quality, digitization and processing time and finally price. Our results show that the structured light scanner provided the best results to record external structures, CT was found to be the best to record internal structures and is also the best for recording reflecting material such as enamel. Photogrammetry is a very good compromise between portability, price and quality. RTI is a method of 2D+ recording and is a complementary technique, using the same equipment than photogrammetry, which can capture small morphological.
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Tarsal diversity in the earliest Eocene mammal fauna of Dormaal, Belgium
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Mammal teeth bring important information regarding phylogeny and diet. However, postcranial elements, although poorly studied for small Paleogene mammals, can provide other significant data. The purpose of this study is to associate tarsal bones with dental specimens for a systematic identification. We thus chose the Belgian locality of Dormaal (Tienen Formation, Belgium) that has yielded the earliest Eocene mammals of Europe. This particularly rich fauna, dated between 55.5 and 55.8 Ma, occurred during the Paleocene-Eocene Thermal Maximum, a key period in the mammal evolution. It is composed by archaic mammals (“condylarths”, arctocyonids, plesiadapiforms, “insectivorans”…) and also by earliest modern taxa (primates, rodents, carnivoraforms, artiodactyls …), representing about 14,000 dental specimens. 488 tarsal bones are studied according to three methods: morphology, relative abundance and relative size. 12 morphotypes of astragali and 18 of calcanei are discriminated and most of them are identified at the level of species (e.g. the marsupial Peratherium constans), genus or family (e.g. ischyromyid rodents). New perspectives in phylogeny and paleoecology are proposed for further studies implying tarsal bones.
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A land micro-mammal fauna from the Early Eocene marine Egem deposits (NP12, Belgium) and the first occurrence of the peradectid marsupial Armintodelphys outside North America
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Dental remains of land mammals are sometimes discovered in shallow marine Paleogene deposits of the North Sea Basin. Such is the case for eleven specimens we describe here from the Early Eocene Egemkapel Clay Member in the middle part of the Tielt Formation, found in Ampe quarry at Egem in Northwestern Belgium. The small fauna consists of 6 taxa, including the neoplagiaulacid multituberculate Ectypodus, the erinaceomorph insectivore Macrocranion, the nyctitheriid Leptacodon, an eochiropteran bat possibly belonging to a palaeochiropterygid, an unidentified perissodactyl possibly belonging to an equoid, and a new species of the peradectid marsupial Armintodelphys. The latter represents the first European occurrence of the genus, which was previously only known from the North American late Early and early Middle Eocene of the Wind River and Green River basins in Wyoming and the Uinta Basin in Utah. Biogeographic and biostratigraphic analyses of peradectid marsupials suggest that Armintodelphys dispersed between North America and Europe around the time of the Early Eocene Climatic Optimum. The Egemkapel Clay Member has been dated as middle NP12, early late Ypresian, whereas the Egem mammal fauna can be correlated to the fauna of Avenay from the Paris Basin, which is the international reference-level MP8+9 of the mammalian biochronological scale for the European Paleogene.
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Calcul des écoulements de nappes aquifères à deux dimensions en régime transitoire
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De oostrand van het Massief van Brabant met beschrijving van de geologische verkenningsboring te Martenslinde
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Actes des Journées de Spéléologie Scientifique, Han-sur-Lesse 1997 à 2000
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