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Monothalamous forms

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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP303.8
EISBN: 9781862395510
... or agglutinated shells. Modern assemblages, on the other hand, include many fragile monothalamous (single-chambered) forms and komokiaceans (a superfamily of protist currently placed within the foraminifera) with soft test walls. These groups are poorly known and most of the hundreds of morphospecies recognized...
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Journal Article
Published: 01 October 2002
Journal of Foraminiferal Research (2002) 32 (4): 384-399.
.... They vary from <50μm to a centimetre or more in length and are morphologically diverse, including spherical, oval, sausage-shaped and thread-like forms. Most are monothalamous and have either one aperture (e.g. Allogromia ) or two terminal apertures at either end of the test (e.g. Nemogullmia...
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Journal Article
Published: 01 April 2007
Journal of Foraminiferal Research (2007) 37 (2): 93-106.
...Anna Sabbatini; Caterina Morigi; Alessandra Negri; Andrew J. Gooday Abstract Live foraminiferal assemblages, including soft-walled monothalamous taxa (organic-walled allogromiids, agglutinated saccamminids and psammosphaerids) in addition to hard-shelled polythalamous forms, were analyzed at nine...
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Journal Article
Published: 01 January 2013
Journal of Foraminiferal Research (2013) 43 (1): 3-13.
... sediments of the central North Pacific Ocean ( Snider and others, 1984 ), where the dominant faunal component comprises delicate, “soft-shelled” forms with organic or agglutinated walls and monothalamous (single-chambered), branched-tubular, or uniserial tests. These foraminifers make a considerable...
FIGURES
Journal Article
Published: 01 November 2004
Journal of Micropalaeontology (2004) 23 (2): 135-137.
... in replicates 1 and 2, respectively. In sample 1, Allogromia crystallifera was represented by three (2.3%) specimens, the brown saccamminid by two (1.5%) specimens and the white saccamminid by one specimen (0.8%). Monothalamous foraminifera form an important component of foraminiferal assemblages...
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Journal Article
Published: 01 October 2002
Journal of Foraminiferal Research (2002) 32 (4): 351-357.
... studied. Sandahl (1857) , Goës (1894) , Höglund (1947 , 1948) , Nyholm (1950 , 1952 , 1953 , 1954 , 1955a , 1974 ), Nyholm and Gertz (1973) , Dahlgren (1962 , 1964), and Cedhagen and Mattson (1991) described several new species from this area. In particular, twenty-four new monothalamous...
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Journal Article
Published: 01 April 2013
Journal of Foraminiferal Research (2013) 43 (2): 113-126.
...Deniz Z. Altin-Ballero; Andrea Habura; Susan T. Goldstein Abstract We describe a new monothalamous species, Psammophaga sapela , collected from salt marshes and mudflats along the coast of Georgia, U.S.A. Partial small subunit ribosomal DNA (SSU rDNA) phylogenetic analyses assign this species...
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Journal Article
Published: 01 October 2005
Journal of Micropalaeontology (2005) 24 (2): 191-192.
... slices were preserved in 75% alcohol and subsequently sieved on a 64 µm screen, stained with rose Bengal, and meiofaunal organisms picked out under a binocular microscope. Soft-shelled monothalamous foraminifera (organic-walled ‘allogromiids’ and agglutinated ‘saccaminids’) have often been over...
FIGURES
Journal Article
Published: 01 January 2011
Journal of Foraminiferal Research (2011) 41 (1): 3-13.
...Jan Pawlowski; Wojciech Majewski Abstract During an expedition to King George Island, Antarctic Peninsula, we discovered two species of organic-walled, monothalamous foraminifera bearing mineral particles within their cytoplasm. The particles are predominantly magnetite and titanoferous magnetite...
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Journal Article
Published: 01 December 2002
Journal of Micropalaeontology (2002) 21 (2): 131-135.
... in the size distribution, while the spherical Allogromiid sp. 1 dominated the larger-size classes. This sample provides further evidence for the widespread occurrence of soft-walled monothalamous foraminifera in marine habitats. A form resembling Resigella is common in the Atacama Trench sample but has...
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Journal Article
Published: 01 January 2004
Micropaleontology (2004) 50 (3): 253-280.
..., Platysolenites Eichwald 1860, Spirosolenites Glaessner 1979, and multichambered forms such as “ Haplophragmoides -like” and “ Ammobaculites -like” genera. In our material only monothalamous foraminifers are present that are not similar to those forms described from the Cambrian. Thus, our data support...
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Journal Article
Published: 01 April 2005
Journal of Foraminiferal Research (2005) 35 (2): 93-102.
... the phylogenetic relationship among foraminifera. The tree is rooted at a sequence of Reticulomyxa filosa ACT1. The numbers of internal branches are bootstrap values of NJ and ML analyses, higher than 50%, except for the clade of monothalamous taxa formed by Allogromia sp. A, Edaphoalogromia australica...
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Journal Article
Published: 01 October 2002
Journal of Foraminiferal Research (2002) 32 (4): 334-343.
...Jan Pawlowski; Maria Holzmann; Cedric Berney; Jose Fahrni; Tomas Cedhagen; Samuel S. Bowser Abstract Allogromiids are classically defined as a group of monothalamous, soft-walled foraminiferans. Recent morphological, cytological, and molecular studies, however, challenge this view, showing...
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Journal Article
Published: 01 October 2002
Journal of Foraminiferal Research (2002) 32 (4): 375-383.
... monothalamous Foraminifera. Cribrothalammina alba , along with several other saccammininds, has a flex-ible test that is in contact with the cell body and consists of a finely fibrous IOL (inner organic lining) and prominent agglutinated layer. Though Hyperammina sp. also has an IOL and prominent agglutinated...
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Journal Article
Published: 01 January 2012
Journal of Foraminiferal Research (2012) 42 (1): 66-81.
... salisburyi , and various monothalamous agglutinates are dominant. This succession of assemblages probably reflects the increasing scarcity of trophic resources with water depth. This hypothesis is corroborated by 1) the clear decrease of TSS with increasing water depth, and 2) the decreasing sediment...
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Journal Article
Published: 01 October 2002
Journal of Foraminiferal Research (2002) 32 (4): 358-363.
... mm diameter, through which there were many perforations, indicated the presence of an individual on the seabed. Partial removal of the overlying sediment revealed the naked opaque, white, sticky cell body. Toxisarcon alba exists in three distinct forms. In the most commonly occurring form...
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Journal Article
Published: 01 January 2010
Journal of Foraminiferal Research (2010) 40 (1): 3-15.
...Susan T. Goldstein; Andrea Habura; Elizabeth A. Richardson; Samuel S. Bowser Abstract The biodiversity of modern monothalamid Foraminifera (predominantly agglutinated taxa as well as naked and organic-walled forms) is considerably higher than that recognized in most previous studies. The numerous...
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Journal Article
Published: 20 April 2018
Journal of Foraminiferal Research (2018) 48 (2): 156-163.
... Globothalamea. While larger members of the textulariids are fairly well known, smaller forms like the ones described here are often overlooked or synonymized with known species. A new species and genus was isolated from algal samples collected on the French coast of the Mediterranean Sea. Cyrea szymborska gen...
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Journal Article
Published: 01 January 2006
Journal of Foraminiferal Research (2006) 36 (1): 3-14.
... surveys on November 13–14, 2002, and May 22–24, 2003. In November 2002 (10 days after the venting event) agglutinated forms dominated the assemblages in sediment samples, whereas hyaline forms dominated the assemblages collected from the leaves and roots of P. oceanica . Six months later, in May 2003...
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Image
Maximum likelihood tree of the actin paralog ACT2 (278 sites), showing the ...
Published: 01 April 2005
%, except for the clade of monothalamous taxa formed by Allogromia sp. A, Edaphoalogromia australica and Bathysiphon sp. The clades supported by phylogenetically stable introns are indicated by black squares.