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cryptalgal taxa

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Journal Article
Published: 01 May 2006
Journal of Paleontology (2006) 80 (3): 411–422.
... Cambrian and Ordovician microbialites for biostratigraphic correlation purposes (e.g., Dolnik, 2000 , who named or identified stromatolite taxa; Shapiro and Awramik, 2000 , who did not identify taxa, but used morphologically distinctive stromatolites and thrombolites). This contrasts sharply...
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Journal Article
Journal: Geology
Published: 01 September 2010
Geology (2010) 38 (9): 811–814.
... assemblage contains eight new soft-bodied taxa, including the anomalocaridid Stanleycaris hirpex n. gen., n. sp. (new genus, new species). Nektonic or nektobenthic predators represent the most diverse group, whereas in relative abundance, the assemblage is dominated by typical Cambrian shelly benthic taxa...
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Journal Article
Journal: PALAIOS
Published: 01 May 2009
PALAIOS (2009) 24 (5): 303–317.
... of origination and times of first occurrence, as well as extinction and last occurrence (e.g., Holland, 1995 ; Holland and Patzkowsky, 1999 , 2002 ). Multiple field studies have likewise demonstrated the validity of these predictions not only for benthic marine invertebrates but also for planktonic taxa (e.g...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 January 1996
GeoArabia (1996) 1 (1): 6–27.
... of Abu Dhabi. Toland (1994) and de Matos (1994) have provided recent data on the palaeontology and biostratigraphy of the Arab Formation in Abu Dhabi. Alsharhan and Whittle (1995) also list taxa found in the succession. The lines of Composite Standard Time Units (CSTUs) suggest that, within...
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Journal Article
Journal: Geology
Published: 04 November 2020
Geology (2021) 49 (3): 304–308.
... of Paleontology , v. 53 , p. 505 – 506 . Okulitch , V.J. , 1939 , Evolutionary trends of some Ordovician corals : Transactions of the Royal Society of Canada, ser. 3 , v. 33 , sec. 4, p. 67‒80 . Pratt , B.R. , and James , N.P. , 1982 , Cryptalgal-metazoan bioherms of early...
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Journal Article
Published: 01 July 2002
Journal of Paleontology (2002) 76 (4): 733–740.
... of the Canadian shield area may have served as refugium for archaic echinoderm taxa. Associated coral and brachiopod faunas, together with sequence stratigraphic considerations of the Thornloe Formation indicate that the beds yielding Novacystis are of middle Wenlock rather than Llandovery age. Novacystis...
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Journal Article
Published: 01 May 2000
Journal of Paleontology (2000) 74 (3): 386–393.
..., it is difficult to refer these disarticulated sponge spicules to existing or to new taxa. However, representatives of demosponges and hexactinellids are recognized. While marked differences are noted between older and younger lithistid dendroclones, for example, spicule form in these Middle Ordovician specimens...
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Journal Article
Journal: PALAIOS
Published: 14 August 2018
PALAIOS (2018) 33 (8): 353–360.
... such as diagenetic overprints and ecology of the taxa analyzed can influence δ 18 O values independent of climate, but we argue that these variables could not introduce a large enough signal to change the interpretation that the Early Ordovician was marked by very warm sea surface temperatures. These arguments...
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Journal Article
Published: 11 January 2022
Journal of Sedimentary Research (2021) 91 (12): 1305–1330.
... valves on each slide were counted to obtain relative proportions of taxa in the diatom community ( Battarbee 1986 ). For the morphometric analysis, diatom valves were photographed with a Leica DMC5400 digital camera and measured using Leica Application Suite (LAS) v.4.10 software. Diatoms were identified...
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Journal Article
Published: 17 May 2021
Geological Magazine (2021) 158 (10): 1830–1846.
... (millimetric to centimetric) lignitic layers bearing abundant plant micro- and meso-remains (isolated leafy axes, leaves, cones and pollen of conifers as well as compressed woods). F5 Laminated dolomite M Grey-blue to yellow dolomite locally cryptalgal and showing abundant thin laminites in transverse...
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Journal Article
Published: 01 January 2015
Journal of Paleontology (2015) 89 (1): 96–102.
... and Williams, 1997 ) although one of the new taxa described herein and a potential new species from the thin Stephen Formation at Stanley Glacier were illustrated by Caron et al. ( 2014 , suppl.-fig. 6o, q) and Caron et al. ( 2010 , fig. DR3L), respectively. Williams et al. ( 2007...
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Journal Article
Journal: PALAIOS
Published: 20 September 2019
PALAIOS (2019) 34 (9): 405–423.
... by the presence of physical and organic sedimentary structures including mudcracks, evaporites, heterolithic bedding, intraclasts, sparse fenestrae, stromatolites, and cryptalgal laminae ( Fig. 4 C– 4 F). Stromatolites and cryptalgal laminae are domal on a millimeter to decimeter scale. In one instance...
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Journal Article
Published: 17 October 2002
Canadian Journal of Earth Sciences (2002) 39 (10): 1485–1503.
...), and Bathurst Island includes 22 species assigned to 21 genera. Many of these taxa are endemic to Arctic Canada. Each collection of brachiopods is typically dominated by only one or two taxa. Cluster analysis, based on binary data, shows that the brachiopods can be divided into an Atrypa – Elythyna community...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 2004
AAPG Bulletin (2004) 88 (11): 1573–1602.
... a field classification for cryptalgal biolithites, which included oncolites, stromatolites, thrombolites, and crytalgalaminates. Cryptalgal was defined as sedimentary rocks or structures originating through sediment-binding and/or carbonate-precipitating activities of nonskeletal algae. Aitken (1967...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 April 2006
GeoArabia (2006) 11 (2): 53–70.
... succession, from the base up is: Qasr unit 1 (4 m thick). Green to blue, silty claystone incorporating several beds of dolomicrite that have cryptalgal lamination, in places with an interbrecciate structure, and decimeter-thick beds of medium-grained, planar-laminated sandstone. The sandstone contains...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1972
AAPG Bulletin (1972) 56 (1): 68–80.
... ) = Common ( P ) =Present 1. Poorly washed skeletal [intraclast] grainstone; common taxa are crinoids, corals, trilobites, brachiopods, mollusks (Open subtidal to protected subtidal) Kimmswick (A) Fernvale (C) 2. Well washed skeletal [intraclast] grainstone: taxa same as 1 (Open subtidal...
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Journal Article
Published: 01 February 1999
Journal of the Geological Society (1999) 156 (1): 89–103.
..., Baltimore 1989 3 1834 1842 Madgewick H.A.I. Pinus radiata—biomass, form, and growth 1994 Rotorua, New Zealand H.A.I. Madgewick Monty C.L.V. Walter M. The origin and development of cryptalgal fabrics Stromatolites 1976 20 Amsterdam Elsevier 193 250 Developments...
Journal Article
Journal: Paleobiology
Published: 01 May 2007
Paleobiology (2007) 33 (2): 165–181.
... and other humid, marginal marine embayments may also contain a relatively depauperate benthic fauna, but because many taxa are uniquely adapted to variably brackish conditions (e.g., Fürsich 1993 ), brackish water alone is usually insufficient to exclude benthic organisms for long periods of time...
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Journal Article
Published: 01 May 2022
Journal of Paleontology (2022) 96 (3): 715–728.
... organisms were rarely hosts, and endobionts were microscopic and rare (Vinn, 2017 ). A number of taxa with modular coral-like skeletons are known from reefs dating to Cambrian Epoch 2, including Flindersipora Lafuste in Lafuste et al., 1991 , Moorowipora Fuller and Jenkins, 1994 , Arrowipora Fuller...
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Journal Article
Published: 27 September 2012
Canadian Journal of Earth Sciences (2012) 49 (10): 1177–1199.
... ) and ( ii ) inflated micritic chambers ( Fig. 12B ). The biotic affinity of these latter microstructures remains uncertain, but they fall within the range of possible diagenetic microbial taxa ( Pratt 1984 ). Spongiostromate and microbial peloidal microstructures occur in horizontal and vertical...
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