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Description: Operational Taxonomic Unit (OTU): Mud-walled Astrorhizoidae sp. A
Smaller foraminifera are incorporated in the tests of this species.
Item Type: Image Title: Astrorhizoidae sp. Copyright: SERPENT project Species: Astrorhizoidae sp. Behaviour: deposit feeder Site: Atlantic -- Norwegian -- Dalsnuten Site Description: Seafloor Depth (m): 1452 Latitude: 66 deg 34' 33" N Longitude: 3 deg 32' 46" E Countries: Norway -- Norwegian Sector Habitat: Benthic Rig: Aker Barents Project Partners: Shell, Aker Drilling, Oceaneering ROV: Magnum 142 Deposited By: Dr K Kroeger Deposited On: 27 June 2011
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A closeup of the aperture. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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This genus is common in deep-water environments. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Ipoa pennata
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Description: This species incorporates sponge spicule in its test. Sieved on a 0.50 mm sieve (macrofauna). Item Type: Image Title: Crithionina hispida Copyright: SERPENT project Species: Crithionina hispida Behaviour: deposit feeder Site: Atlantic -- Norwegian -- Dalsnuten Site Description: Seafloor Depth (m): 1452 Latitude: 66 deg 34' 33" N Longitude: 3 deg 32' 46" E Countries: Norway -- Norwegian Sector Habitat: Benthic Rig: Aker Barents Project Partners: Shell, Aker Drilling, Oceaneering ROV: Magnum 142 Deposited By: Dr K Kroeger Deposited On: 24 June 2011
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This species is common in the deep, marine ares of the Sandebukta, a branch of the Oslofjord. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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This specimen has two distinct apertures (one is quite visible at upper left). Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Septuma stellata
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Description: Operational taxonomic unit (OTU): Crithionina ?’elongated’.
The test (‘outer crust’) is broken in these specimens. In the bigger specimen the incorporated sponge spicules can be seen. Macrofauna (sieved on 0.5 mm sieve).
Item Type: Image Title: Crithionina sp. Copyright: SERPENT project Species: Crithionina sp. Behaviour: deposit feeder Site: Atlantic -- Norwegian -- Dalsnuten Site Description: Seafloor Depth (m): 1452 Latitude: 66 deg 34' 33" N Longitude: 3 deg 32' 46" E Countries: Norway -- Norwegian Sector Habitat: Benthic Rig: Aker Barents Project Partners: Shell, Aker Drilling, Oceaneering ROV: Magnum 142 Deposited By: Dr K Kroeger Deposited On: 13 July 2011
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The wall of this foram includes a thick inner organic lining (IOL) underlying the agglutinated layer (A). The cell body is at lower right. Image courtesy of Susan T. Goldstein, University of Georgia. This image first appeared in J. Foram Res. 32:375-383 and is used with permission.
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This specimen has no distinct apertures through the test, which is not uncommon in members of this genus. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Normanina conferta
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Description: Operational Taxonomic Unit (OTU): Komokioidea sp. A
Komokioidea are typical of deep sea sediments. This group of foraminiferans has been described relatively recently. Smaller foraminifera are incorporated in the tests of this species. Item Type: Image Title: Komokioidea sp. Copyright: SERPENT project Species: Komokioidea sp. Behaviour: deposit feeder Site: Atlantic -- Norwegian -- Dalsnuten Site Description: Seafloor Depth (m): 1452 Latitude: 66 deg 34' 33" N Longitude: 3 deg 32' 46" E Countries: Norway -- Norwegian Sector Habitat: Benthic Rig: Aker Barents Project Partners: Shell, Aker Drilling, Oceaneering ROV: Magnum 142 Deposited By: Dr K Kroeger Deposited On: 27 June 2011
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This foram was collected from a salt marsh on Sapelo Island, Georgia. The species name is due to this foram's habit of agglutinating fine, light-colored particls; it appears white under the light microscope. Image courtesy of Susan T. Goldstein, University of Georgia. This image first appeared in J. Foram Res. 32:375-383 and is used with permission.
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Greenland Sea/Arctic, cruise of Polarstern found at 78.58N 07.37W at 192m depth 30.9.1995
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Normanina conferta
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This image shows the foram's reticulopodia (the elaborate branching pseudopodia sticking out of the vase-like hole in the test). Reticulopods are the defining morphological characteristic of the Granuloreticulosea as a group. Image courtesy of Susan T. Goldstein, University of Georgia.
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Tholosina species attach to surfaces and build an agglutinated dome over the cell body. The dome is more "inflated" looking than the ones produced by their apparent relatives, the genus Hemisphaerammina. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Septuma sp.
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Psammophaga species are noted for taking sand grains into their bodies; the genus name means "sand eater" in Greek. You can see the coarse quartz sand through the translucent walls of the foram's test. Image courtesy of Susan T. Goldstein, University of Georgia.
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This view shows the inside of the dome-shaped test. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in J. Foram. Res. 16: 261-284; used with permission.
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Reticulum sp.
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Top: Reflected-light image of three individuals of the species, showing size variation. The white color is caused by a very fine layer of sand particles (probably quartz) that the foram glues to its outer surface. Bottom: A slightly higher-magnification transmitted-light image, with the nucleus clearly visible. Length of this specimen: approximately 600 um. Image courtesy of Andrew J. Gooday, Southampton Oceanography Centre.
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This giant Antarctic foraminiferan is often several millimeters across. Notice the two large projections (called stolons. In this species, the reticulopodia emerge from the ends of the stolons. Image courtesy of Samuel S. Bowser, Wadsworth Center.