Test free, ovate to spherical, wall proteinaceous, may have some agglutinated matter, Aperture terminal with entosolenian tube.
Test ellipsoidal to fusiform or cylindrical, rarely spherical. Chambers rapidly increasing in width resulting in progressive elongation of the test. Apertures in a double row.
Biconvex test with low trochospiral coil of 3 to 4 volutions, spiral side evolute, umbilical side involute.
Large discoidal test, biconcave with thickened rims. Cyclic chambers subdivided by chamberlets. Apertures consist of numerous pores on the peripheral margin arranged in two or more alternating rows.
Flat test, early stage planispirally coiled and involute, chambers rapidly increasing in breadth so that test becomes peneropliform, then flabelliform and finally ends in broad strongly arched chambers.
Compressed test with rounded periphery, early stage planispiral and involute with a thickened central boss. later chambers become cyclical.
Test free, monothalamous, fusiform, <300 um in length and <70um in width;organic wall transparent from 2to7um in width, thicker around the aperture. The single aperture is funnel-shape with a tubular internal extension. Multinucleate cytoplasm (up to 11 nuclei); granular, in constant rapid movement. Reticulopodes very active with rapidly forming reticulopodial network and fast moving granules. Specimens emit GAF (green autofluorescence), which disappeared with fixation.
Test free, large, up to 6.5 mm in diameter, in the form of a single spherical or flattened polygonal chamber with one to five narrow stolon-like arms radiating in various directions but usually in nearly the same plane and the longest ones commonly very flexible, may also have fragile conical projections and may produce rounded buds; protoplasmic body enclosed in a thick tripartite theca with a single oral region.
Test biconvex, lenticular with prominent radial spines.
Test globular but the three or four large thick and protruding spines may give a triangular to tetrahedal appearance.
Test monothalamous, almost spherical, 140–450 mm in diameter; wall transparent, proteinaceous, with smooth outer surface devoid of agglutinated grains; single aperture located in the centre of low, broad projecting region; cytoplasm light grey or greenish, containing various inclusions which often include mineral particles.
Test elongate, ovoid to triangular in outline, biserial chambers.
Small spherical to fusiform test, apertures in a single row.
Test free, monothalamous, elongate, tubular, up to 2 mm in length and 0.5 mm in width; single terminal aperture without gromiids−like oral capsule; wall transparent, organic, with smooth outer surface; cytoplasm granular, white or yellow in color, without stercomata.
Discoidal test with annular chambers that have internal subdivisions. Living specimens are green due to chlorophycean endosymbionts. Occurence: Carribean Sea.
Test elongate ovate to subcylindrical, triserially arranged chambers, distinct septa.
Lenticular biconvex test, commonly with a few to many heavy and blunt to splayed or bifurcating radial spines.
Species of Capsammina characterised by strongly flattened test dominated by 2-3 flat, parallel mica plates. Plates separated by more or less oval ring of white mortar composed of fine mineral grains and enclosing cell body. Both mortar and cell body visible though transparent plates.
Carterina Brady (1884) is defined by its secreted calcareous spicules.Loeblich and Tappan (1955) created the family Carterinidae and suborder Carterinina (Loeblich and Tappan, 1981).
Elongate test, lituoline in form with rounded periphery and biserial chambers, coiled in early stage and later uncoiled.
Morphologically, the new genus is most similar to vellaria, notably in the presence in some specimens of a delicate, flared apertural extension. However, this structure is not as well developed as in Vellaria and the overall test shape is more lenticular. Molecular analyses indicate that Cedhagenia is not related related to Vellaria but most closely related to Ovammina.
Test commonly attached to a substrate, trochospiral and planoconvex.
Test in a low trochospiral coil, spiral side flattened but slightly involute, final whorl slightly elevated and partly overlapping the preceding one.
Test free, monothalamous, elongate, tubular, up to 1000 mm long and 50 to 100mm wide with a simple aperture at the end of a short terminal neck.Wall very ¢nely agglutinated with a very smooth, non-re£ective outer surface. Cytoplasm without stercomata.
Large circular test, centrally umbonate and narrowed at the periphery. Annular chambers subdivided into chamberlets.
Large discoidal test, early stages planispiral and involute, producing a central thickened part of the test, later chambers become annular.
Test planispirally enrolled and involute, surface with numerous striae aligned with the direction of coiling.
Agglutinated test, early stage trochospiral, later triserial; inflated chambers.
Test subfusiform, early stage trochospiral, later triserial, wall coarsely to finely agglutinated, held in an organic cement.
Test planispiral, bilaterally symmetrical; sutural canal system opens into a single row of pores; septal bridges usually hollow and contain a retral process; aperture a series of large circular pores at base of aperture face.
Test short, subcylindrical, circular in section, base broadly rounded, chambers trochospirally arranged.
Ovate test, circular in section, triserial, with rapidly enlarging and strongly overlapping inflated chambers.
Globular to lenticular test,biserial enrolled chambers, periphery rounded to acute or carinate.
Test elongate ovate to sausage-shaped, up to 2mm in length. Wall of two more or less separated proteinaceous membranes, single aperture, cytoplasm with numerous inclusions.
Planispiral test, bilaterally symmetrical, sutures radial, slightly curved, deeply incised near the umbilicus.
Test attached, a single hemisphaerical chamber, agglutinated wall with no apparent aperture.
Involute to evolute test, centrally thickened, chambers divided into chamberlets.
Large elongate, finely agglutinated test. Apertural end contracted and broadly rounded.
Discoidal test, very low trochospiral to nearly planispiral, semieevolute on both sides.
Test in an early stage in close trochospiral or planispiral coil, later uncoiling, compressed and flaring.
test free, monothalamous, ovoid shape (ratio length/width between 1 and 2), < 115um in length and < 85 um in width; organic wall transparent from 1 to 3 um in width. Two opposite apertures, funnel-shaped with a tubular internal extension. Cytoplasm multinucleate at least in this stage of its life cycle; granular, with rapid movement. Reticulopodes very active with rapidly forming large reticulopodial network and fast moving granules.
Test free, monothalamous and more or less spherical, up to 2 mm diameter. Wall delicate, flexible, with inner organic layer overlain by fine, loosely agglutinated mineral grains. Single prominent circular aperture, which may protrude slightly from the test surface. Cell body with well-developed peduncular sheath.
Uniserial and rectilinear test, globolar proloculus followed by an elongate series of gradually enlarging chambers. Thin and flexible wall.
Large stout test with early trochospiral coil of four to five chambers per whorl, rapidly reducing to uniserial in the adult.
Large discoidal test, biconcave with thickened periphery, apertures consist of numerous small circular openings on the peripheral wall.
Elongate agglutinated test, up to 6mm in length; sand grains, sponge spicules or tests of other foraminifers are incorporated in the agglutinated wall.
Proteinaceous elongated test with fine longitudinal striae, terminal aperture, temporary opening might be present at opposite end.
The genus differs from Saccammina and Leptammina in the shape of the test /elongate rather than approximately spherical) and the presence of a nipple-like apertural structure, which is quite unlike the simple round opening that characterizes these two genera.
Single or compound umbilical plug, aperture restricted by a toothplate that protrudes with a free edge into the aperture and forms an umbilical spiral canal.
Low trochospiral test, slightly compressed, rounded periphery, spiral side partially evolute around an umbonal boss, umbilical side involute, chambers with flaplike projections overhanging the umbilicus.
Large agglutinated test consisting of a bulbous central area of which a branching system of holdfasts emerges. Bulb and holdfasts are buried in the mud with a vertical stalklike portion projecting above the surface and ending in an arborescent and flexible structure.
Globular test, lenticular or discoidal,planispirally enrolled.
Test planispiral and evolute, flattened, numerous narrow chambers in many rapidly expanding whorls, sutures strongly curved back at the periphery.
Smooth exterior, undivided chambers. External similarities in shape to N. venosus but is distinguished by the latter by the possession of trabeculae. Thick lenticular central part and flat final chambers in large individuals.
Lenticular, low trochospiral test, spiral side evolute with three slowly enlarging whorls, four to five chambers in the final whorl, umbilical side involute.
Discoidal test with annular chambers that are subdivided into chamberlets. Green colour in living specimens is caused by chlorophycean endosymbionts. Occurence: Indopacific.
Low conical planoconvex test, all chambers visible from the convex spiral side, carinate periphery.
Compressed test, early stage planispirally enrolled and involute, later chambers rapidly increasing and strongly arched.
Planispirally, semi-involute to evolute coiled test, incomplete division of chambers into chamberlets.
Test planispiral, semi-involute to evolute, complete division of chambers into chamberlets.
Pyriform to ovoid test, wall of thick transparent flexible matrix with a thinner outer agglutinated covering, terminal simple aperture.
Test globular to slightly depressed, planispiral and involute; aperture a narrow interiomarginal crescentic slit.
Athalamid, multinucleate, freshwater foraminifera.
Test consists of complex system of fine, branching tubules of even diameter. Test wall simple; agglutinated particles argillaceous. Stercomata (faecal pellets) accumulate within tubules.
Aragonitic test wall, high trochospiral tests, chambers subdivided by transverse partitions.
Trochospiral test with rapidly enlarging chambers, central aperture on umbilical side.
Large globular test with slightly projecting spines or tubercles.
The new genus resembles species of the genus Syringammina, in particular the type species Sy. fragilissima. The genera are similar in the general shape and construction of the test, which consists of a framework of bar-like elements, forming a tightlymeshed, often reticulated structure. The main morphological difference between the new genus and Syringammina is the nature of the test wall. In Syringammina, the wall is brittle, with a smooth inner surface, and consists of ‘tightly cemented xenophyae’ (Tendal, 1972). These comprise mainly fine sand grains and small foraminiferan tests in Sy. fragilissima. Shinkaiya, on the other hand, is characterized by a relatively thick wall that is soft rather than brittle, and consists mainly of clay-sized sediment particles.
Agglutinated test, chambers arranged in quinqueloculine manner. Aperture at the end of a short neck.
Discoidal test, early chambers are peneroplid, later chambers become annular and divided into chamberlets that are connected by a stolon system. Apertures occur along the peripheral margin, they are more or less circular and surrounded by a calcified rim. Living specimens have a brownish colour due to Symbiodinium endosymbionts.
Large elongate test, crosier shaped, early chambers planispirally enrolled, later uncoiling and rectilinear.
Evolute test, fusiform in lateral view. Biloculine chamber arrangement, aperture at the end of an elongated neck.
Agglutinated biserial test. Each chamber extends into fistulose chamberlets.
The test is constructed by numerous tubes of tightly cemented xenophyae. The tubes are arranged in a radiating manner, single tubes being connected with other tubes by side branches. The xenophyae are restricted to the tube walls, and only granellare and stercomare are found in the interior.
Biserial test, agglutinated walltraversed by canaliculi that may open as perforations. Aperture a low arch or slit at the base of the apertural face
Cell body large (up to several centimeters diameter), either covered by agglutinated test or entirely naked and resembling an amoeba. Where present, test is free with central inflated region giving rise to several branches that generally taper and multifurcate terminally. Test wall agglutinated with little particle selectivity and poorly cemented.
Elongate test, sharply triangular in section and early stage triserial, later uniserial and rectangular. Aperture surrounded by a low collar.
Elongate test, rounded in section, triserial, surface with longitudinal costae or striae.
Monothalamous test, characterised by the development of a flared, conical or trumpet-shaped apertural structure which apparently serves to attach the test to small sand grains.
Test elongate, early stage triserial, later biserial. Chambers slightly inflated and strongly over-lapping, final pair comprising about two-thirds the test length, lower margin of chambers with numerous narrow bridgelike projections that cross the slightly constricted sutures; wall calcareous, finely perforate. Aperture an oblique loop in the apertural face, provided with a reduced toothplate that commences near the previous foramen and attaches to the lower part of the chamber wall, continuing to the lower border of the aperture, wjth supplementary sutural openings between the sutural bridges.
Test free or attached; wall agglutinated, with spicules, imperforate; trochospiral in early, irregular growth in adult stage; attachment to substratum by umbilical spicular mass or by sheet-like peripheral spicular flange.