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Les nouvelles fouilles entreprises à Saint-Vallier de 1993 à 1999 ont montré que le site possède deux horizons fossilifères, le plus important étant le niveau supérieur de lœss durci LD 3 qui doit être considéré comme le niveau-type du Villafranchien moyen. Le niveau inférieur LD 2, beaucoup plus pauvre, se distingue surtout par la présence d'un Allohippus stenonis bien différent de celui de LD 3...
This work describes stage by stage the biostratigraphy of the Middle to Late Permian in Mexico and Guatemala. Roadian deposits are very poorly represented, as a consequence of tectonic movements at the end of the Kungurian/Leonardian stage. In fact Middle and Late Permian deposits are almost completely lacking in South Mexico and the whole Latin America, due to a probable climatic barrier. The main...
The Middle to Upper Cambrian Machari Formation in Korea is well known for abundant and diverse trilobites along with other invertebrate fossils. Based on recent reappraisal on the trilobites of the Machari Formation, eight trilobite zones have been proposed for the Upper Cambrian sequence: i.e., in ascending order the Glyptagnostus stolidotus, Glyptagnostus reticulatus, Proceratopyge tenuis, Hancrania...
Three stratigraphic sections in the Cambrian of China that contain complete successions across important biohorizons having chronostratigraphic value, and that may be useful for developing Cambrian stage or series boundaries, are reviewed. The Wuliu section (Guizhou, South China), contains the FAD of Oryctocephalus indicus at 58.2 m above the base of the Kaili Formation. The Wangcun North section...
Extensive information has been acquired on the occurrence of Lower Cambrian Small Shelly Fossils (SSF) in the shallow water sediments of the western fringe of the Yangtze Platform (eastern Yunnan and central Sichuan Provinces) during the last two decades. However, less is known on the temporal and spatial distribution of SSFs on the northern margin of the Yangtze Platform. Here we report SSF associations...
The solenopleurine trilobite genera Jincella and Liosolenopleura are revised herein. The species Jincella prantli, Jincella convexa nov. sp. and Liosolenopleura serventi occur in Languedocian (upper Middle Cambrian) rocks of the southern Montagne Noire (France), southwestern Sardinia (Italy), and the Pribram-Jince and Skryje areas (Czech Republic). The correlation of their first appearances permits...
La decouverte d'une nouvelle espece de terebratule (Xestosina sera nov. sp.) dans le Tithonien inferieur permet de preciser la subdivision biostratigraphique de la zone a Gigas et d'ameliorer les correlations, lorsque les ammonites font defaut, entre les depots tithoniens d'Aquitaine, du Jura septentrional et de la bordure est du bassin de Paris. La revision critique du genre Xestosina donne un cadre...
Six Pragian-Emsian boundary sections in the Barrandian area, western of Prague, provided evidence of well detectable entries of Latericriodus fauna probably at the earliest Emsian beds (particularly Latericriodus bilatericrescens gracilis Bultynck). The chance to find icriodontid conodonts increases with latest part of Praha Fm., which is apparently of Emsian age, whereas polygnathids are sparsely...
La riche faune d’échinides du Crétacé inférieur du bassin du Haut Atlas atlantique, a été révisée à partir de nouvelles et abondantes récoltes, bien repérées stratigraphiquement. Quarante sept espèces ont été étudiées ; vingt sont signalées pour la première fois dans le bassin, dont trois nouvelles espèces laissées en nomenclature ouverte. Leur extension stratigraphique a été précisée grâce à un bon...
The microbial-dominated part of a Late Mississippian (Early Carboniferous) carbonate olistolite at La Serre (Montagne Noire, southern France) yielded interesting algae and pseudo-algae. The constituents are well known cyanobacteria (not described) and different representatives of poorly known or new species: cyanobacteria: Aphralysia capriorae, Hedstroemia (?) serrana n. sp., Dasycladales: Paraepimastopora...
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