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16 results for “Rudist”
Supplementary data for manuscript titled: "Radiolitid Rudists: An Underestimated Archive for Cretaceous Climate Reconstruction"
<p>Supplementary data for manuscript titled: "Radiolitid Rudists: An Underestimated Archive for Cretaceous Climate Reconstruction"</p> <p>Containing raw stable isotope and trace element data used in the study</p>
Supplementary Information to: "Living on the edge: Response of rudist bivalves (Hippuritida) to hot and highly seasonal climate in the low-latitude Saiwan site, Oman"
<p>This dataset contains supplementary information required to understand and reproduce the study detailed in our manuscript titled "<em>Living on the edge: Response of rudist bivalves (Hippuritida) to hot and highly seasonal climate in the low-latitude Saiwan site, Oman</em>" which was submitted for publication to Palaeogeography, Palaeoclimatology, Palaeoecology.</p>
Fig. 2 a in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 2 a Lithostratigraphic succession from Strâmturii Valley and Cioroi-Negru Brook, Cornițel village, Borod Basin (redrawn after MureȘan et al., 1974) showing the units (I, II, III, and IV) defined by Șuraru (1972) and MureȘan et al. (1974). b Detailed studied section near the top of the unit II. Legend: 1 tuffs and tuffites; 2 marls; 3 siltic marls; 4 sandy marls; 5 sandstones; 6 conglomerates; 7 limestones with charophytes; 8 hippuritid-bearing limestones; 9 "hippurites reefs"; 10 corals; 11 gastropods; 12 bivalves; 13 foraminifera; 14 rudists; 15 charophytes; 16 palynomorphs.
Fig. 7 a, b Bournonia excavata d in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 7 a, b Bournonia excavata d'Orbigny, 1847, (inventory no. 24078 BBU-MPS =no.1246 sample field); a transverse section through RV close to the commissure, showing the myocardinal elements: anterior and posterior tooth and myophores (am, pm) of the opposite valve; b view of flat posteroventral side of RV; c Gorjanovicia endrissi (Böhm)(24079 BBU-MPS) – transverse section of RV showing compact layer, concave ventral band (Vb); Ib- narrow and wide Pb with 3 fine rounded costae; d, e Praeradiolites subtoucasi (Toucas): d transverse section through RV (24080-BBU-MPS), unknown commissure. The outer shell layer from ventral side is eroded thus the radial bands are missing. e transverse section on other specimen (24081-BBUMPS) having outer shell layer partially broken but preserve the myocardinal apparatus. f, g Radiolites squamosus (d'Orbigny): f specimen with both valves showing convex LV, very eroded and the ornamentations of RV consist in dense growth lamellae (sample no. 24082 BBU-MPS); g ventral side of RV of the same specimen showing radial bands (Vb and Pb) with folds upward to commissure and the narrow interband (Ib). h-i Radiolites nouleti (Bayle)(sample no. 24083 BBU-MPS): h large conical RV, thick-shelled, with dense folded growth lamellae, slightly ondulated in large interband (Ib); i transverse section in RVof the same specimen, showing thick cellular outer shell layer, ligamental ridge and accessory cavities. j, k Sphaerulites boreaui (Toucas)(sample no. 24084 BBU-MPS), j specimen with both valves, top view, showing LV, thin and smaller than lower valve and large RV with expanded, sub-horizontal growth lamellae; k transverse section through RV, showing thickness of cellular
Fig. 4 a, b Microfacies from the first rudist-bearing lithosome. a-e, g in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 4 a, b Microfacies from the first rudist-bearing lithosome. a-e, g bioclastic-intraclastic floatstone/rudstone; bioclasts are poorly sorted with angular to subangular shapes. f bioclastic-extraclastic grainstone. h bioclastic-extraclastic packstone/wackestone.
Fig. 6 a, b in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 6 a, b Extraclastic sediments from the rudist-bearing lithosomes; they are represented by metamorphic lithoclasts (quartzite, crystalline schists), monomineral quartz, muscovite and biotite (crossed polars). c, d Tuffites with altered volcanic glass and various crystalloclasts, angular quartz, biotite and calcite (c- plane-polarized light; d - crossed polars).
Fig. 5 a, b Microfacies from the second rudist-bearing lithosome. a, c-e in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 5 a, b Microfacies from the second rudist-bearing lithosome. a, c-e Bioclastic-extraclastic floatstone; frequent bioclasts are represented by rudist fragments, echinoderm fragments and bivalves fragments; the rudist shells are fragment- ed and perforated (a, d). b Bioclastic-extraclastic rudstone/grainstones with rudist, echinoderm fragments and red algae fragments.
Fig. 8 a-g in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 8 a-g Hippuritella lapeirousei (Goldfuss)(nos. 24085, 24086, 24087, 24088-BBU-MPS). a Transverse section made close to the beak of right valve (RV), the outer shell layer is thick, reaching 3 mm. b RV showing the position of the pillars (P1 and P2) as shallow longitudinal furrows (24085 BBU-MPS). c thin and nearly flat LV very eroded showing remains of radial canals (24085 BBU-MPS). d ventral area of conical, slightly curved RV (24086 BBUMPS) showing the position of the pillars as two shallow longitudinal furrows; e transverse section of RV showing short and rounded pillars (P1 and P2) with the same size (24086 BBU-MPS). f, g transverse sections through specimens (nos. 24087, 24088 BBU-MPS) that have the first pillar (P1) slightly smaller than the second pillar (P2). Note the erosion of the outer shell layer in f) (24087 BBU-MPS). h-i Vaccinites gosaviensis (Douvillé)- transverse section made on two RVs (nos. 23503, 24089 BBU-MPS) showing truncated ligamental ridge (L) and characteristic shape of the pillars. j Vaccinites archiaci (Douvillé), transverse section on RV (no. 24090 BBU-MPS) showing triangular in base and lamelliform ligamental ridge (L), first pillar (P1) thick and shorter and slightly pinched P2. k Vaccinites sulcatus (Defrance) – transverse section on lower valve (no. 23504 BBU-MPS) in which ligamental ridge (L) is wide and short having the same length with first pillar (P1) and second pillar is slightly pinched at its base and curved anteriorly.
Data for: Taxonomy and paleobiogeography of rudist bivalves from Upper Cretaceous strata, Gulf Coastal Plain and Puerto Rico, USA
<p class="MsoNormal"><span class="normaltextrun"><span>This study provides the first focused investigation of rudist bivalves from the Upper Cretaceous of the Gulf Coastal Plain (GCP) in the southern US and previously undescribed specimens from the Flor de Alba Limestone Member of the Pozas Formation in Puerto Rico. Identified rudists from the GCP comprise the Monopleuridae Munier-Chalmas, 1873, including <em>Gyropleura</em> Douvillé, 1887, as well as Radiolitidae d'Orbigny, 1847, including <em>Biradiolites</em> <em>cardenasensis</em> Böse, 1906, <em>Durania </em>Douvillé, 1908, <em>Durania</em> <em>maxima</em> (Logan, 1898), <em>Radiolites</em> Lamarck, 1801, <em>Guanacastea</em> <em>jamaicensis</em> (Trechmann, 1924), <em>Radiolites</em> <em>acutocostata</em> (Adkins, 1930), and <em>Sauvagesia</em> Choffat, 1886. Integrating rudist occurrences within well-established GCP biostratigraphy allows for extension of upper ranges of <em>D. maxima</em> and <em>R. acutocostata</em> into the late Campanian, and lower ranges of <em>B. cardenasensis</em> and <em>G. jamaicensis</em> into the early Campanian. Identified rudists from Puerto Rico comprise the Hippuritidae Gray, 1848, and include <em>Barrettia</em> <em>monilifera</em> Woodward, 1862, which supports the age of the Flor de Alba Limestone Member of the Pozas Formation as middle Campanian. Combined taxonomic, biostratigraphic, and paleobiogeographic analyses indicate there is no rudist fauna endemic to the GCP, and the region marks the northeastern range of the Caribbean genera <em>Biradiolites</em>, <em>Durania</em>, <em>Guanacastea</em>, <em>Gyropleura</em>, <em>Radiolites, </em>and <em>Sauvagesia</em> during the Campanian and Maastrichtian. The new occurrences help inform future updates of Late Cretaceous sea surface current reconstructions for the Caribbean and Western Interior Seaway, USA. </span></span><span class="eop"><span> </span></span></p>
Data for: Taxonomy and paleobiogeography of rudist bivalves from Upper Cretaceous strata, Gulf Coastal Plain and Puerto Rico, USA
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Data from: The evolution of canaliculate rudists in the light of a new canaliculate polyconitid rudist from the Albian of the Central Pacific
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Data from: Evolution of the rudist bivalve Agriopleura Kühn (Radiolitidae, Hippuritida) from the Mediterranean region
The genus Agriopleura (Radiolitidae) is restricted to the Lower Cretaceous of the Mediterranean region, including the Middle East, and this rudist is apparently absent from the New World. Agriopleura underwent a size increase from late Hauterivian to mid-late Barremian, matching Cope's rule, followed by a Lilliput phase in the early Aptian. The relative development of radial bands increased through time and represents a key evolutionary index. During its evolution, Agriopleura increased in species diversity and expanded geographically onto the European Mediterranean Tethyan margin from the late Hauterivian to Barremian, after which it disappeared from the region (pseudotermination). In the lower Aptian, after a Lazarus gap, the genus reappears in the southern Mediterranean Tethyan margin. Assuming that Archaeoradiolites is the direct descendant of Agriopleura, the disappearance of the genus in the mid-Aptian was a pseudoextinction and this coincided with a major crisis of shallow carbonate settings and their associated biota. The definition of Agriopleura species is based on a set of qualitative and quantitative external and internal characters. Five species are recognized: three Barremian species, Agriopleura blumenbachi, the type species, A. marticensis and A. carinata; one lower Aptian species A. libanica; and a new species A. sequana restricted to the upper Hauterivian. Principal component analysis is used to test the distinctiveness of the species and the pattern of relationships of some of their key quantitative characters.
Fig. 1 in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 1 Geological map of Borod Basin (redrawn after Popa, 1981). Legend: 1 Magmatic rocks; 2 Metamorphic rocks; 3 Triassic; 4 Jurassic; 5 Upper Cretaceous; 6 Miocene; 7 Quaternary; 8 Location of studied area.
Fig. 3 a, b in Upper Cretaceous Rudist-Bearing Mixed Siliciclastic-Carbonate And - Volcanoclastic Deposits From Strâmturii Valley, Borod Basin, Northern Apuseni Mountains: Description, Microfacies And Depositional Environments
Fig. 3 a, b The first rudist bearing lithosome from Cioroi-Negru Brook; c, d Rudists and rudist fragments visible in this outcrop; e The second rudist-bearing lithosome; f Rudists of the second lithesome. Yellow arrows represent scale bars.
Data from: Evolution of the rudist bivalve Agriopleura Kühn (Radiolitidae, Hippuritida) from the Mediterranean region
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Supplementary datasets for "Investigating the solid-state reordering kinetics of rudist fossils: clumped isotope analysis of shells with different burial histories and associated paleoclimatic implications"
<p>Supplementary datasets for submission of manuscript titled "Investigating the solid-state reordering kinetics of rudist fossils: clumped isotope analysis of shells with different burial histories and associated paleoclimatic implications" by the following authors: </p> <p>Barbora Křížová (1,2), Niels J. de Winter (3,4), Martin Ziegler (5), Alberto Riva (1), Philippe Claeys (4), Steven Goderis (4), Deborah Arbulla (6), and Gianluca Frijia (1)<br>1Department of Physics and Earth Sciences, University of Ferrara, Italy; 2Laboratoire de Géologie de Lyon: Terre - Planètes – Environnement, UMR CNRS 5276, Université Claude Bernard Lyon 1, ENS de Lyon, France; 3Faculty of Science, Vrije Universiteit Amsterdam, The Netherlands; 4Archaeology, Environmental Changes and Geo-Chemistry Group, Vrije Universiteit Brussel, Belgium; 5Earth Science Department, Utrecht University, The Netherlands; 6Museum of Natural History in Trieste, Italy</p> <p><span> </span></p>
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