Falsolikanella danilovae RADOIČIĆ ex BARATTOLO 1978, n. comb., a diploporacean alga from the Urgonian facies

International audienceOriginally described as Likanella danilovae RADOIČIĆ 1969, nom. nud., the species partly revisited hereafter has been lately ascribed to the genus Praturlonella BARATTOLO 1978 and validly published under this new combination. This short paper aims to demonstrate that it should be referred to the genus Falsolikanella GRANIER 1987

Systématique des algues rouges du Miocène moyen de la Formation Gârbova de Sus (Bassin Transylvanien, Roumanie)

This study describes seventeen non-geniculate coralline algal species (orders Corallinales, Hapalidiales and Sporolithales) from the middle Miocene (lower-middle Badenian) red-algal limestones of the Transylvanian Basin, Gârbova de Sus Formation. For the description and identification at species level, we follow the common diagnostic features used for fossil species and some characters that are used as diagnostic for modern species (roof morphology for asexual conceptacles, the presence/absence of a layer of elongated cells below sporangial compartments and number of cells in paraphyses for Sporolithon, and measurements of gametangial and carposporangial conceptacles). Female conceptacles of Spongites fruticulosus Kützing are for the first time described in fossil material. We propose the attribution of Lithophyllum platticarpum Maslov to Spongites fruticulosus Kützing as a gametangial thallus with male conceptacles.Cette étude présente dix-sept espèces d'algues corallines non articulées (ordres des Corallinales, des Hapalidiales et des Sporolithales) provenant des calcaires à algues rouges du Miocène moyen (Badénien inférieur-moyen) de la Formation Gârbova de Sus du Bassin Transylvanien. Pour la description et l'identification au niveau spécifique, nous adoptons les caractéres diagnostiques habituellement utilisés chez les espèces fossiles et certaines caractéristiques qui sont considérées comme diagnostiques chez les espèces modernes (morphologie du toit pour les conceptacles asexués, la présence ou l'absence d'une couche de cellules allongées sous les compartiments sporangiaux et le nombre de cellules dans les paraphyses de Sporolithon, et les mesures des conceptacles gamétangiaux et carposporangiaux). Les conceptacles femelles de Spongites fruticulosus Kützing sont décrits pour la première fois chez des formes fossiles. Nous proposons le rattachement de Lithophyllum platticarpum Maslov à Spongites fruticulosus Kützing pour un thalle gamétangial à conceptacles mâles.2016-05-24T13:31:28

Upper Aptian calcareous algae from Pădurea Craiului (Northern Apuseni Mountains, Romania)

A study of calcareous strata previously assigned to the Barremian-Early Aptian interval in the northwestern part of Pădurea Craiului, (Apuseni Mountains), led to the identifi cation of a icropaleontological association indicative of a Late Aptian age. Unequivocal evidence for the Late Aptian assignment of these limestones is the presence throughout the sequence of two orbitolinid species, Mesorbitolina texana (ROEMER) and Mesorbitolina subconcava (LEYMERIE). The most interesting sections are located in the neighbourhood of Subpiatră, where both outcrops and a quarry facilitated detailed analyses. In this area, the Upper Aptian succession consists basically of three types of macrofacies: 1) limestone with rudists; 2) limestone with Bacinella and 3) limestone with corals, each of them showing several types of microfacies. Bacinella structures are the most common feature in the whole succession, irrespective of the macrofacies. This paper focuses on an algal association that was identifi ed in several levels within the succession. Dasycladalean algae are more frequent, and are commonly found in grain-dominated fabrics (mostly grainstone textures), in association with orbitolinid foraminifera and bioclasts of corals, rudists and gastropods. However, a few species are present only in mud-dominated fabrics (i.e. lower-energy intervals). The dasycladalean association from the Upper Aptian deposits of Pădurea Craiului is of special interest, for this group registered a dramatic decline at the Lower Aptian/Upper Aptian boundary, as confirmed by the relative scarcity of the Dasycladales in the Upper Aptian carbonate deposits

The IMAM case. Additional investigation of a micropaleontological fraud

International audienceStarting in 1996 and for almost a decade, M.M. IMAM contributed to twelve papers published in international geological journals. These papers dealt with the micropaleontology and biostratigraphy of Cretaceous to Miocene series from Egypt and Libya. They were abundantly illustrated in order to support the author's findings and interpretations. However most photographic illustrations (189 at least) were fabricated with material lifted from the publications of other authors, commonly from localities or stratigraphic intervals other than those indicated by M.M. IMAM

Praeorbitolina claveli n.sp. (foraminifère benthique) de l'Aptien inférieur sensu lato (Bédoulien) du centre de l'Iran

Un nouveau foraminifère orbitolinidé, Praeorbitolina claveli n.sp., est identifié dans l'Aptien inférieur (Bédoulien) de l'Iran central. Il se caractérise par un appareil embryonnaire constitué d'une zone subembryonnaire subdivisée ainsi que d'une déutéroconque. L'association d'orbitolinidés d'âge Barrémien-Aptien de cette région présente un caractère typiquement nord-téthysien (e.g., "association à Valserina" de CHERCHI et SCHROEDER, 1973).The new orbitolinid foraminifer, Praeorbitolina claveli n.sp., is described from the Lower Ap-tian (Bedoulian) of Central Iran. It is characterized by an eccentric embryonic apparatus displaying both a subdivided subembryonic zone and a deuteroconch. The Barremian-Aptian orbitolinid association of this area has a typical northern Tethyan character (e.g., "association à Valserina" of CHERCHI and SCHROEDER, 1973)

Polyphysaceae fertile caps in Hungarian Sarmatian sediments

Three fragments of reproductive caps have been discovered in the Sarmatian limestones of Tinnye (Hungary). They are assigned to the genus Acetabularia (Polyphysaceae, formerly Acetabulariaceae). Two of these fragments are quite well preserved with nine rays each. One specimen bears distinct spines at the outer ends of long rays, whereas another one has short rays with rounded outer ends and, possibly, a partially preserved corona. The third fragment is characterized by very elongated rays containing numerous gametangia

Première identification en subsurface de calcaires d'eaux peu profondes attribués au Crétacé basal dans la Dépression de Transylvanie (Roumanie)

Triassic, Upper Jurassic and upper Lower Cretaceous sedimentary formations were previously studied from the Transylvanian Depression basement, but the presence of lowermost Cretaceous (Berriasian-Valanginian) has not been confirmed paleontologically. The carbonate sequence cored from a borehole drilled in the central part of the Transylvanian Depression yields microfossil assemblages dominated by benthic foraminifera. These new data unequivocally document the presence of characteristic Berriasian-Valanginian taxa in these deposits

Crescentiella, a new name for “Tubiphytes” morronensis CRESCENTI, 1969: an enigmatic Jurassic – Cretaceous microfossil

Several organisms or interaction of organisms have been described over a long time interval from the Late Palaeozoic to Cretaceous as Tubiphytes, with the type species being T. obscurus MASLOV, 1956. Palaeozoic Tubiphytes were revised by SENOWBARI-DARYAN & FLÜGEL (1993). Triassic representatives still need to be revised. For Jurassic (extremely abundant in upper Jurassic) and Cretaceous organisms, known as “Tubiphytes” morronensis CRESCENTI, 1969, we propose here the genus name Crescentiella. Differences between Crescentiella nov. gen. and Tubiphytes MASLOV are discussed. The systematic position of Crescentiella as a foraminifera, interaction of foraminifera and cyanophyceans or as a special kind of oncolite is discussed. It is interpreted as symbiosis or encrustation between cyanobacteria and a nubecularid foraminifera, uncertain tube or rarely, other biogenic components. Comments on similar associations, e.g. the genus Labes ELIASOVA, are provided

L'affaire IMAM. Compléments d'enquête sur une fraude micropaléontologique

À partir de 1996 et pendant près d'une décennie, M.M. IMAM a contribué à douze articles parus dans des revues géologiques internationales. Ces publications traitent de la micropaléontologie et de la biostratigraphie de séries d'âge Crétacé à Miocène d'Égypte et de Libye. L'iconographie abondante était sensée renforcer la validité des découvertes et interprétations de l'auteur. Or la plupart des illustrations photographiques (189 au moins) ont été fabriquées à partir de photos "empruntées" à des publications d'autres auteurs, le plus souvent provenant de localités ou d'intervalles stratigraphiques autres que ceux indiqués par M.M. IMAM.Starting in 1996 and for almost a decade, M.M. IMAM contributed to twelve papers published in international geological journals. These papers dealt with the micropaleontology and biostratigraphy of Cretaceous to Miocene series from Egypt and Libya. They were abundantly illustrated in order to support the author's findings and interpretations. However most photographic illustrations (189 at least) were fabricated with material lifted from the publications of other authors, commonly from localities or stratigraphic intervals other than those indicated by M.M. IMAM