Description de quelques nouvelles espèces de Follicucullidae et d'Entactinidae (Radiolaires polycystines) du permien du Japon

Six new species of radiolarians from the Upper Permianof Kamigori (SW Japan) are introduced. They represent a part of a rich fauna, the whole of which will be detailed in an other paper.     

Revision du genre LycopodiopsisB. Renault, 1890

The study of imprints of Lycopsida from Permianof the Gondwana has permitted to specify the organisation of the leaf cushions and their variation in the genus LycopodiopsisB. Renault. The presence of a ligula is showed off. The invalidity of the genera Cyclodendron and Lycopodiophloios is demonstrated, and the species refered to these genera must be refered to the genus Lycopodiopsis for which an emended diagnosis is proposed.     

Les Rongeurs (Mammalia,Rodentia)de l'Oligocène terminal de Dieupentale (Sud-Ouest de la France: Tarn et Garonne)

The rodent fossil fauna discovered in the localityof Dieupentale (Tarn-et-Garonne), compared to those from Moissac II and la Milloque, constitute an important biochronological stake belonging to the level of Coderet.     

Isoetine,nouvelle flavone isolee de Isoetes delilei et de Isoetes durieui

A new flavone isolated from Isoetes has been identified as 2′,4′,5,5′,7-pentahydroxy flavone.     

Sur quelques echinodermes(Cystoides et Crinoides) de l'Ashgill d'Aragon (Espagne)

The material collected in the outcrops of Fombuenaand Luesma allows to specify the distinctive characters of the genera Corylocrinus and Caryocrinites, to describe two new species and to complete the morphology of Heliocrinites rouvillei and Proteocystites hispanica. The Crinoid association of these localities shows a very close composition with that of Coat-Carrec (Finistère). The new observations establish definitively the structure of the dorsal cup and the oral face of Mespilocystites. The occurence of the genera Stichocystis, Eucystis and Mespilocystites is recorded for the first time in Aragon. Cystoids and Crinoids confirm the existence of Ashgillian in the western part of the Armorican Massive.     

Le genre Murciella (Foraminifère, Rhapydionininae), dans le Crétacé supérieur de Grèce (zone de Gavrovo-Tripolitza)

Several new species are described, of which theendoskeletal features present strong similarities with YaberinellaVaughan. Each chamber consists of: 1) a single peripheral layer of tubular «primary chamberlets perpendicular to the septa they join, 2) concentric inner layers of tubular «secondary chamberlets oriented obliquely to the preceding, each layer inclined in the contrary sense to its inner and outer neighbour, and the inclination being symmetrical with respect to any radial plane. Thus the secondary chamberlets form two helices, each with the same axis, which is also the axis of the chamber and the axis of growth: this is called «helicoidal structure. Lateral connections exists between the tubes of different layers («stolons).The chamber arrangement, and above all the presence of a preseptal space equipped with buttresses exclude the new species from Yaberinella and permits their assignment to the sub-family Rhapydionininae, more precisely to the genus MurciellaFourcade, of which several known sections (particularly the holotype of the type-species) seem to show the same organisation.The mode of coiling shown by some of the new forms, together with the lateral connection between chamberlets (the function of which might be the same as that of the preseptal space) permit the advocation of a development from Murciella (Tethysian, Upper Cretaceous) to Yaberinella (central American, Eocene).     

Les gisements continentaux de Plaissan et de la Nouvelle Faculté de Médecine (Hérault) leur position stratigraphique

The study of Plaissan rodent fauna and the discoveryof a new fossiliferous locality, 〈Nouvelle Faculté Médecine〉, allow us to contribute to a more accurate biochronological mammalian scale, for the Bas-Languedoc Lower Miocene. Nouvelle Faculté Médecine, contemporaneous of La Paillade or slighthy older has a Aquitanian age; Plaissan, equivalent to Paulhiac, ist older than the oldest known interbedded marine level in the Languedocian marine Aquitanian (Les Cévennes); it should be contemporaneous with the ante-stratotypic Aquitanian of Carry-le-Rouet.     

Étude morphologique et anatomiquede Rhynchonelloidea ruthenensis (Reynès, 1868) justification de la distinction des genres Rhynchonelloidea Buckman, 1914 et Homoeorhynchia Buckman, 1914 (Brachiopoda)

In the course of researches on the fauna of «calcaires bajociens á bryozoaires of Aveyron départment (France), numerous collects of shells named Rhynchonelloidea ruthenensis (Reynès), type-species of genus RhynchonelloideaBuckman, in two localities enabled to do a morphologic study of this species with populations analysis. Internal characters have been shown both by serial sections and by direct observation of dissected shells. A comparison of genus Rhynchonelloidea and Homoeorhynchia, till now either distinct or considered synonymous according to authors, has been realised. Internal characters of Homoeorhynchia acuta (Sow.) have been precised. The two genus are distinct by beak and foramen's characters, by presence or lack of costulation on the beak and dorsal umbo, by the number of ribs, by presence or lack of septalium and by the development of median dorsal septum.The stratigraphical range of R. ruthenensis is:Upper Toarcian, Aalensis zone-Lower Aalenian, Opalinum zone.     

Le genre Dionide Barrande, 1847 (Trilobite)dans l'Ordovicien du Massif Armoricain et du Portugal

A new species of DionideBarrande, Dionide mareki nov. sp., is described from siltstones of Llandeilo age in the Armorican Massif and north Portugal. The known geographical distribution of this species presents new evidence for the strong palaeobiogeographical relationship, during the Llandeilo, between the Valongo district (near Porto) and the Martigné-Ferchaud and Saint-Julien-de-Vouvantes synclinoriums south of Rennes.     

Pecopteris (Asterotheca) saraeiP. Corsin, 1951, forme fertile de Sphenopteris damesii (Stur, 1885)

Sphenopteris damesii (Stur), a rather frequentspecies from the Sarre-Lorraine Coalfield was only known till now as a typical sphenopteridian sterile foliage. The study of a lot of specimens from recent boreholes has allowed us to show the great polymorphism of this species whose foliage, usually deeply dissected, tends to be pecopteridian in the fertile stage.The organization of fructifications and the type of included spores are described for the first time. Moreover, the comparison of the fertile specimens of Sph. damesii with those from the same horizon described by P. Corsin as Pecopteris saraei has revealed similarity in limb morphology, in the organization of fructifications, in the type of spores which proves that P. saraei is the fertile form of Sp. damesii. Consequently, P. Corsin's species is a posterior synonym of Sphenopteris damesii (Stur).The generic attribution of this species sets a nomenclatural question: the features of the fructifications agree exactly with the diagnose of the genus AsterothecaPresl but this genus till now was reserved for sporangia born by typical pecopteridian foliage. Nevertheless, the species is temporarily refered to Asterotheca until further works allow to decide about the subordination of these different characters.     

Selenopeltis (Trilobita) from Brittany and its distribution in the ordovician

The distribution of the genus SelenopeltisHawle & Corda throughout the Selenopeltis Province shows the presence during the Arenig of northern and southern species «groups, and a Llandeilo migration of the latter is identified within the Median Armorican synclinorium. New material of S. macrophthalmus (Kloucek) is described from Brittany together with S. gallicus gallicus nov. sp., nov. subsp. and S. gallicus irroratus nov. sp., nov. subsp.     

Sur la découverte des genres Ischyrhiza et Ptychotrygon (selachii,batomorphii) dans le Crétacé supérieur de Vendée (France)

The genera Ischyrhiza and Ptychotrygon are pointed out for the first time in Upper Cretaceous of France. A new species of Ischyrhiza: I. viaudi is described. These discoveries allow to enlarge considerably the area of dispersion of these genera.     

A new species of Polemanniopsis (Apiaceae) from Namibia

A new species of woody Apiaceae, Polemanniopsis namibensis B-E. Van Wyk, A. Burke & C. Mannheimer, is described. The species is allied to Polemanniopsis marlothii but differs in the much smaller habit of (up to 0.6 m vs 1.5–4 m in Polemanniopsis marlothii), the white or greyish colour of the twigs (brown in Polemanniopsis marlothii), the 3-foliolate leaves (predominantly 5-foliate in Polemanniopsis marlothii), the smaller inflorescences with persistent involucral bracts (caducous in Polemanniopsis marlothii) and anatomical details of the leaves. The species is endemic to Namibia and is known only from a localised area in the southern Namib desert near Lüderitz, where it is relatively common.     

Ischyodus bifurcatus, a new speciesof chimaeroid fish from the upper cretaceous of New Jersey

Toothplates of the ratfish Ischyodus are rather common fossils, distributed throughout the Campanian-Maestrichtian of New Jersey and Delaware although heretofore unrecognized or described. A new species of Ischyodus differs from the European species, I. thurmanniPictet & Campiche and I. dolloiLeriche, by the fusion of the median and internal posterior tritors of the mandibular apparatus. Except in rare individuals the palatine elements of I. bifurcatus do not show any fusion of their tritoral aspects. The vomerine elements show no distinctive features that could separate them from of any of the known Ischyodus species, and the dorsal fin spine is not significantly different from those of other known chimaeroid fishes, including Edaphodon, Elasmodus, Elasmodectes and Leptomylus. Ischyodus bifurcatus is erected as a new species based upon the bifurcated appearance of the fused mandibular tritors. A temporal range from late Santonian to medial Maestrichtian is indicated by occurrences in Belgium, California, Montana, Arkansas, and Delaware as well as New Jersey.     

Rides septales à organisation de type tétracoralliaire chez Trachypsammia (Tabulata, Permien)

Précédemment décrite chez Kerforneidictyum et Palaeacis I'organisation des rides septales suivant un schema de type tetracoralliaire est reconnue chez Trachypsammia monoseptata (Permien de Timor) où n'avait été signalé qu'un fort “Medianseptum”. II détermine un plan de symétrie bilatérale dans le calice; la ride cardinale forte est en position dorsale ou interne, la ride antipode également bien développée en position ventrale ou externe souvent plus courte, les rides considérées comme alaires sont identifiables au moins dam leur partie proximale. L'ensemble des rides clairement observables sont les rides majeures (protorides et métarides), les rides mineures sont à peine ébauchées. T. monoseptata pourrait représenter un stade calicinal jeune de T. dendroides. Trachypsammia dendroides (Permien de Timor) posséde un plan de symétrie bilatérale net. la ride cardinale est plus forte et plus longue que les autres rides, la ride antipode plus courte, les rides alaires sont identifiables en coupe transversale. rides majeures el mineures sont bien differenciées; le nombre total de rides est souvent de 32. Chez T. xizangensis (Permien du Tibet), seule une symétrie bilatérale a été observée en coupe. Pas de donnees pour T. mrditerranea (Permien de Sicile). Les affinités systéinatiques très étroites mises en évidence entre Polaeacis et Trachypsammia par les caractéres microstructuraux sont confirmées par Ie dispositif septal, ces Tabulés constituent-ils un groupe particulier? La question est posée A rugosan pattern of the septal ridges, formerly described in Kerforneidictyum and Palaeacis is pointed out in Trachypsammia monoseptata (Permian of Timor) for which only the ‘Medianseptum’ had been observed. T. monoseptata exhibits a strong cardinal ridge in dorsal or internal position. just opposite a shorter counter ridge, thus creating a plane of bilateral symmetry. The ridges assumed to be alar can be identified by their proximal ends being in contact with the ‘Medianseptum’. The major ridges (proto and metaridges) are obvious, the minor ones show only their very proximal ends. T. monoseptuta could be a calicinal young stage of T. dendroides. T. dendroides (Permian of Timor) shows a plane of bilateral symmetry, the cardinal ridge is stronger and longer than the others, the counter shorter, the alar ridges can be identified in transverse section. major and minor ridges are well developed; the number of ridges is often 32. In T.xizangensis (Permian of Tibet) only the bilateral symmetry is known, while there are no data for T mediterranea (Permian of Sicily). The systematic affinities between Palaeacis and Trachiypsammia pointed out on the basis of microstructural data are also supported by the septal ridges pattern. Do Palaeacis, Trochypsammia and others form a special division of Tabulate corals? That is the question     

Découverte de Zygolophodon turicensis(Schinz) (Proboscidea,Mammalia) au lieu-dit Malartic a Simorre,Gers (Vindobonien moyen); Implications paléoécologiques et biostratigraphiques

The Vindobonian locality of Malartic (Gers),yielded a mammalian fauna characterized by the association of Brachypotherium brachypus and Zygolophodon turicensis. One can demonstrate the controversial existence of Z. turicensis in the french Miocene from a near complete dentition belonging to one specimen. This species can be clearly distinguished from the bunodont mastodont Gomphotherium angustidens from numerous characters of the tusks and molars. Z. turicensis immigrated in France in the middle Burdigalian (zone of Artenay in the Orléanais Sands), together with G. angustidens and Eotragus artenensis. This immigration puts a further point to establish the major event in continental stratigraphy of the middle Burdigalian mammalian immigration. Z. turicensis seems to be a forest animal and G. angustidens an inhabitant of savannah.     

The oldest Cenozoic passandrid (Coleoptera: Cucujoidea: Passandridae) from the Paleocene of Menat (France)

The new oldest representative of the subfamily Passandrinae (Passandridae) was found in materials from Menat (Puy-de-Dôme, France). It was preliminarily assigned to the genus Passandra Dalman in Schönherr, 1817, although the new species (?) Passandra plenaria sp. n., in contrast to other congeners, demonstrates an exposed labrum and an absence of preapical groove or impression on the hypopygidum. Some notes on fossil records and classification of the family Passandridae are made. The distinctiveness of the families Passandridae and Laemophloeidae in light of the new data on fossils is considered, and the attribution of Mesopassandra Jin, Ślipiński, Zhou and Pang, 2019 (type genus of Mesopassandrinae) to the family Passandridae is regarded as problematic.     

Une piste avec traces de soies épaisses dans le Trias inférieur a moyen de Lodève (Hérault,France): Cynodontipus polythrix nov. gen., nov. sp. les Cynodontes en France

A new ichnological genus, Cynodontipus species-type C. polythrix) has been created to define the unusual tract of a large but still unknown hairy Vertebrate of the Early to Middle Trias, Southern France. Horizon: just below the Chirotherium white sandstones slabs at Fozières (Hérault).This new type of footprint indicates that, as early as the Middle Trias, some Vertebrates were covered with an abundant protection of hair. A short systematic comparison is attempted with the last big Therapsids of that age, mainly the Cynodonts.