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Werneburg et al. New Permian Caseid from France
Embrithopod from Croatia
Field trip guides/EAVP Annual Conference/2023
Early Oligocene Fishes from Alabama, USA
Two enigmatic rodents from Lavergne (MP 16), Quercy Phosphorites
Eocene (57) , Quercy phosphorites (37) , Systematics (32) , Rodents (29) , Mammalia (26)
New datation of the Tafna Basin (Algeria): A combination between biochronological and magnetostratigraphical dataSalamet Mahboubi, Mouloud Benammi and Jean-Jacques JaegerKeywords: correlations; Late Miocene; North Africa; Rodentiadoi: 10.18563/pv.39.1.e1 Abstract The Tafna Basin corresponds to the lowlands, which are located in front of Tessala and Traras ranges, below the Tlemcen mountains, Algeria. This basin displays a complete sedimentary cycle dominated by lagoonal-fluvial and marine deposits. The continental formations located at the base of these deposits are mainly composed of alternating sandstones and clays. An early late Miocene age has been previously attributed to them, based on direct correlations with marine deposits. Search for micromammal fossils led to the discovery of three different rodent species from a single level of the Djebel Guetaf section, located at the bottom of these deposits. The rodent assemblage indicates a late Miocene age. Combined magnetostratigraphical and biostratigraphical investigations were carried out to provide a more accurate age control of these continental deposits. Sixty-four oriented rock samples were collected for a magnetostratigraphic study along a 92 meters thick section including the fossiliferous layer. Rock magnetic investigations indicate the presence of both high and low coercivity minerals. Specimens subjected to progressive thermal demagnetization procedures show that the samples exhibit a high temperature magnetization component and display a normal polarity. Based on biostratigraphic constraints, the Guetaf section is correlated with Chron C4An, indicating an age ranging from Article infos Published in Vol.39-1 (2015) |
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A new hypothesis for the origin of African Anomaluridae and Graphiuridae (Rodentia)Monique Vianey-Liaud and Jean-Jacques JaegerKeywords: Africa; Anomaluridae; Gliridae; Graphiuridae; Paleontology; PHYLOGENY; RodentiaAbstract A new hypothesis for the phylogenetic relationships of recent anomalurids and graphiurids is proposed, based on information from evolutionary lineages of Paleogene European rodents, particularly Gliridae, and Eocene Algerian Zegdoumyidae. Differences in first occurrences, in paleogeography, and in infraorbital structure in glirids (protrogomorphy and pseudomyomorphy) and graphiurids (hystricomorphy) separate Graphiuridae from Gliridae (Graphiurinae is here raised to family rank). Similar considerations, and dental morphology, suggest that Anomaluridae (appearing in the late Eocene) and Graphiuridae (appearing in the Pliocene) are related to early Eocene Zegdoumyidae. Article infos Published in Vol. 25, Fasc. 2-4 (1996) |
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Avant propos au "Premier catalogue des specimens-types Paléontologiques déposés dans les collections de l'Université de Montpellier II"Jean-Jacques JaegerKeywords: Editorial; Type specimensAbstract Avant propos au "Premier catalogue des specimens-types Paléontologiques déposés dans les collections de l'Université de Montpellier II". View editorial Published in Vol. 23, Ext (1994) |
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Les rongeurs de l'Eocène d'Afrique Nord-Occidentale [Glib Zegdou ( Algérie) et Chambi (Tunisie)] et l'origine des anomaluridae.Monique Vianey-Liaud, Jean-Jacques Jaeger, Jean-Louis Hartenberger and Mahammed MahboubiKeywords: Africa; Eocene; New taxa; Paleobiogeography; PHYLOGENY; RodentsAbstract This paper is about the oldest African rodents faunas, from the late Early Eocene, or early Middle Eocene, Glib Zegdou (Algeria) and Chambi (Tunisia) localities. Five species are described and figured, belonging to a new family here created, the Zegdoumyidae. Article infos Published in Vol. 23, Fasc. 1-4 (1994) |
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Evolution of the Rhizomyine zygomaLawrence J. Flynn, Mohammed Sarwar and Jean-Jacques JaegerKeywords: parallel evolution; Rhizomyidae; Rodentia; Siwalik; zygomaAbstract Cranial anatomy of a late Miocene rhizomyid, Brafhyrhizomys cf. B. pilgrimi, provides new evidence on the origin of the dorsal, round infraorbital foramen of living rhizomyines. Primitive rhizomyids retain a myomorphous keyhole foramen with a long ventral slit that retracts upward during the evolutionary history of the Rhizomyidae. The primitive condition of the elongated ventral slit is represented by Kanisamys sivalensis. Among later burrowers the foramen shows progressive dorsal migration, the ventral slit terminating midway up the snout in B.tertracharax and B. choristos ; well above the midline of the snout in Brachyrhizamys cf. B. pilgrimi. Apparently this transformation began earlier among Rhizomyinae than among Tachyoryctinae and continued to a more derived stage in rhizomyines. ln living Rhizomyx the ventral slit is absent and only a high round hole remains at the anterior end of the zygomatic arch. Article infos Published in Vol. 15, Fasc. 3 (1985) |
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Premières données sur les rongeurs de la formation de Ch'orora (Ethiopie) d'âge Miocène supérieur. I: ThryonomyidésJean-Jacques Jaeger, Jacques Michaux and Maurice SabatierKeywords: Ethiopia; Paraulacodus; Rodents; Upper MioceneAbstract The genus Paraulacodus has been collected in the Ch'orora formation of Upper Miocene age, in Ethiopia. The new species, P. johanesi n. sp.. is more evolved than the previously described indian species P. indicus HINTON of the Siwalik Hills area. The morphological gap between P. johanesi and the present Thryonomys is still important. Article infos Published in Vol. 9, Ext (1980) |
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Les rongeurs du Miocène moyen et supérieur du MaghrebJean-Jacques JaegerKeywords: Neogene; North Africa; RodentiaAbstract The Faunas of Rodents from seven north-african fossiliferous beds distributed from the Middle up to the Uppest Miocene are studied. One genus, seventeen species, one subspecies described are new. Article infos Published in Vol. 08, Fasc. 1 (1977) |
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Rongeurs (Mammalia, Rodentia) du Miocène de Beni-MellalJean-Jacques JaegerKeywords: Morocco; NeogeneAbstract The rodent fauna of Beni-Mellal is characterized by the abundance of ctenodactylids and cricetids. The latter are represented by four distinct species, among which a new form. Dakkamys zaiani nov. gen., nov. sp. is described. A detailed morphological analysis shows that, contrary to that which had been established before, « Cricetodon ›› atlasi Lavocat, 1961, is not closely related to any European form known; this species is attributed, in consequence, to the new genus Mellalomys. A simple biometric analysis has shown that the genus Myocricetodon Lavocat, 1952, is represented in this locality by two distinct species. The systematic homogeneity of the Beni-Mellal cricetids is also demonstrated: they can, as a matter of fact, all be referred to the subfamily Myocricetodontinae. The definition of this subfamily is completed. The sciurids and glirids are also reviewed in the light of new systematic and biogeographic information established ln Europe. A new species of Atlantoxevus from the early Pleistocene of Morocco, A. huvelini nov. sp., is described. It is probably the descendant of A. tadlae from Beni-Mellal. Biogeographic analysis leads one to consider this fauna as the result of geographic isolation in the Maghreb since the late Oligocene or the early Miocene. In particular no direct European influence can be discerned. Stratigraphic considerations resulting from the discovery of new localities in North Africa lead to the confirmation of the ante-Vallesian age of this fauna and to its parallelism with the faunas of La Grive in Western Europe and Fort Ternan in East Africa. The peculiar geologic nature of this locality is discussed. Article infos Published in Vol. 07, Fasc. 4 (1977) |
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Pantolestidae nouveaux (Mammalia, Insectivora) de l'Eocène moyen de Bouxwiller (Alsace).Jean-Jacques JaegerKeywords: Bouxwiller; Insectivora; Mammalia; Middle Eocene; Pantolestidaedoi: 10.18563/pv.3.3.63-82 Abstract The Pantolestidae from the middle eocene of Bouxwiller are the subject of a detailed study. Buxolestes hammeli (n. g., n. sp.) is not closely related to any other European or North American form described until now; it presents, however, some characters in common with Pantolestes, a form of the same age from North America. A parallel evolution from a common ancestral form could explain this ressemblance. Article infos Published in Vol. 03, Fasc. 3 (1970) |
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