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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Protonodosaria
Biostratigraphic and sequence stratigraphic relationships of Upper Carboniferous conodont and foraminifer distribution, Canadian Arctic Archipelago Available to Purchase
Smaller foraminifers from Pennsylvanian–earliest Permian of the Vazhnan Fm ... Available to Purchase
1–3 - Protonodosaria curvula Karavaeva and Nestell, n. sp. 1 CRNGE no. 1... Available to Purchase
Figure 2 —Wall structure in Protonodosaria rauserae Gerke, 1959 ; polish... Available to Purchase
figs 1, 2. Protonodosaria tereta (Crespin): 1 , W349-5B, specimen lost, ... Available to Purchase
Permian foraminifers of the Omolon Massif, northeastern Siberia, Russia Available to Purchase
Calcareous hyaline foraminifera; secondary-electron images, except 3, 4, 5,... Available to Purchase
Smaller foraminifers from Pennsylvanian–earliest Permian of the Vazhnan Fm ... Available to Purchase
Carboniferous smaller Foraminifera: convergences and divergences Available to Purchase
Abstract The Carboniferous Foraminifera are composed of representatives of three classes: Fusulinata, Miliolata and Nodosariata. Despite ample literature on Paleozoic Allogromiata and Textulariata, the real presence of these classes remains questionable during the Carboniferous and they are thus excluded herein. The main biostratigraphical markers belong to the superfamilies Archaediscoidea, Lasiodiscoidea and Bradyinoidea, even if many genera among the archaediscoids still have a controversial nomenclature, as well as do some lasiodiscids and bradyinoids. Secondary biostratigraphical markers belong to Lituotubelloidea (= ‘Tournayelloidea’ of the authors), Endothyroidea and Loeblichioidea (these latter giving rise to the primitive Fusulinida). The Miliolata appear at the Visean/Serpukhovian boundary interval. The typical Carboniferous miliolates are primitive nubeculariins and cornuspirinins. Tubiphytids might be miliolate and cyanobacterium consortia, derived from the nubeculariin Palaeonubecularia . The most primitive nodosariates (syzraniids) appeared in the Moscovian; and gave rise, in the latest Carboniferous, to Protonodosaria , Nodosinelloides and possibly Polarisella , Paravervilleina and the oldest Geinitzinoidea. Palaeobiological data are mainly provided by the genera Bradyina , Tetrataxis and Climacammina . Palaeobiogeographical distributions of Pojarkovella , Janischewskina, Eosigmoilina , Brenckleina , Spireitlina , Hemigordius and Syzrania testify to the successive foraminiferal migrations between the Palaeotethys, Ural and Panthalassan oceans. Two taxa are created: Eoparastaffellidae and Banffellinae.
Moscovian–asselian (middle Pennsylvanian–earliest Cisuralian) Smaller Foraminifers from the Asad-abad Section (sanandaj-sirjan Zone, Central Iran) Available to Purchase
Micropaleontology and Paleoenvironments of Saudi Arabian Upper Permian Carbonates and Reservoirs Available to Purchase
Abstract Geologic Problem Solving with Microfossils: A Volume in Honor of Garry D. Jones SEPM Special Publication No. 93, Copyright © 2009 SEPM (Society for Sedimentary Geology), ISBN 978-1-56576-137-7, p. 111–126. Foraminiferal and calcareous algal biofacies of the Upper Permian to Lower Triassic carbonates provide important guides to the depositional paleoenvironment of these important gas-reservoir carbonates of the Khuff Formation in Saudi Arabia. Thin-section analysis has revealed smaller foraminifera that have been variously considered as useful for subdividing the Permian section, despite the absence of the conventional fusulinid species. The Permian–Triassic boundary lies within the Formation, and is defined by locally significant biostratigraphic evidence. Because all species are extinct, paleoenvironmental interpretation is based on the vertical stacking arrangement of various biofacies based on the principle of anticipated paleobathymetric tiering, assisted by the application of morphogroup characteristics. This approach is linked to biological expectations of carbonate secreting organisms associated with successive transgression-linked retrogradational facies movement and regression-linked progradational facies movement, in conjunction with various carbonate textures. Foraminiferal and calcareous algal biocomponents have been used to determine subtle paleoenvironmental variations, both vertically and horizontally, in the subsurface. Paleoenvironmental factors are here suggested to include those that are based on the paleogeography, in terms of seawater temperature, solar incidence, prevailing wind direction, and proximity to land. Eustatic and autocyclic paleobathymetric variations would be expected to cause higher-frequency paleoecological changes in salinity, turbidity, wave energy, and carbonate productivity rates. The following biofacies have been established: Spirorbis–ostracod–gastropod; gastropod–brachiopod–ostracod; ostracod– Mizzia-Gymnocodium; Agathammina–Hemigordius; Agathammina–Hemigordius–Globivalvulina; Nankinella–Staffella; bryozoa; and Pachyphloia–Protonodosaria . The reservoirs here considered display subtle paleoenvironmental variations of an extensive, generally shallow marine, carbonate platform that ranged from intertidal to depths within intrashelf basins that probably rarely exceeded storm wave base. Paleoenvironments ranged from intertidal, shallow to deep subtidal, and shallow shoals. In addition, certain localities display sufficiently diverse events that there is the potential for refined interwell correlation as well as their use for biosteering development wells. Morphogroups have been used to assist in paleoenvironmental interpretation.