Foraminifera taxon details
Millettoelphidium Hayward and Parker in Hayward et al., 2025
1844910 (urn:lsid:marinespecies.org:taxname:1844910)
accepted
Genus
Polystomella millettii Heron-Allen & Earland, 1915 accepted as Cristatavultus milletti (Heron-Allen & Earland, 1915) accepted as Elphidium milletti (Heron-Allen & Earland, 1915) accepted as Millettoelphidium milletti (Heron-Allen & Earland, 1915) (type by original designation)
- Species Millettoelphidium cariacoense (Bermúdez and Seiglie, 1963)
- Species Millettoelphidium culveri Hayward & Holzmann in Hayward et al., 2025
- Species Millettoelphidium elegantum (Hofker, 1976)
- Species Millettoelphidium hyalocostatum (Todd, 1957)
- Species Millettoelphidium milletti (Heron-Allen & Earland, 1915)
- Species Millettoelphidium norvangi (Buzas, Smith & Been, 1977)
- Species Millettoelphidium oceanicum (Cushman, 1933)
- Species Millettoelphidium phillipense (Hayward in Hayward et al., 1997)
- Species Millettoelphidium reticulosum (Cushman, 1933)
- Species Millettoelphidium simulatum (McCulloch, 1977)
- Species Millettoelphidium yassinii Parker & Hayward in Hayward et al., 2025
marine
recent + fossil
neuter
Hayward, B.W., Holzmann, M., Langer, M.R., Parker, J.H., Tsuchiya, M. (2025). Molecular and morphological taxonomy and biogeography of living Cribroelphidiidae, Elphidiellidae, Elphidiidae, Haynesinidae and related taxa (Foraminifera, Rotalioidea). <em>Micropaleontology.</em> 71: 433-808., available online at https://doi.org/10.47894/mpal.71.5.01 [details] Available for editors 
[request]
[request]
Diagnosis Test planispiral, subevolute, bilaterally symmetrical;
outline subcircular, often lobulate; profile moderately compressed,
Taxonomic remark This genus is distinguished from Elphidium
by the subevolute coiling and resulting wide umbilicus covered
by a...
outline subcircular, often lobulate; profile moderately compressed,
Diagnosis Test planispiral, subevolute, bilaterally symmetrical;
outline subcircular, often lobulate; profile moderately compressed,
parallel-sided to weakly convex; peripheral profile
rounded, lacking a keel or imperforate band; incised sutures radial,
slightly curved toward periphery; incised sutures and ponticuli
extend over the periphery; wide to moderately wide umbilicus
covered by a plate-shaped foliar extension that is ornamented
with large pseudospines/tubercles, no plug; ornament may include
radial and/or concentric ribs; primary aperture a row of
interiomarginal circular openings along the base of the apertural
face, although these are often obscured by pseudospines or papillae;
test wall texture finely perforate. [details]
outline subcircular, often lobulate; profile moderately compressed,
parallel-sided to weakly convex; peripheral profile
rounded, lacking a keel or imperforate band; incised sutures radial,
slightly curved toward periphery; incised sutures and ponticuli
extend over the periphery; wide to moderately wide umbilicus
covered by a plate-shaped foliar extension that is ornamented
with large pseudospines/tubercles, no plug; ornament may include
radial and/or concentric ribs; primary aperture a row of
interiomarginal circular openings along the base of the apertural
face, although these are often obscured by pseudospines or papillae;
test wall texture finely perforate. [details]
Taxonomic remark This genus is distinguished from Elphidium
by the subevolute coiling and resulting wide umbilicus covered
by a...
Taxonomic remark This genus is distinguished from Elphidium
by the subevolute coiling and resulting wide umbilicus covered
by a plate-shaped foliar extension that is ornamented with
large pseudospines; from Cribroelphidium by its finely rather
than coarsely perforate test; from the similarly subevolute Protelphidium
by the presence of ponticuli and fossettes; from Nonion
by the presence of intercameral lacunae and open tuberculate umbilici.
In the type species, M. milletti, and also in M. oceanicum,
an umbilical plate that connects with the folium is formed in the
penultimate chamber and connects back to the test to form the
spiral umbilical canal. [details]
by the subevolute coiling and resulting wide umbilicus covered
by a plate-shaped foliar extension that is ornamented with
large pseudospines; from Cribroelphidium by its finely rather
than coarsely perforate test; from the similarly subevolute Protelphidium
by the presence of ponticuli and fossettes; from Nonion
by the presence of intercameral lacunae and open tuberculate umbilici.
In the type species, M. milletti, and also in M. oceanicum,
an umbilical plate that connects with the folium is formed in the
penultimate chamber and connects back to the test to form the
spiral umbilical canal. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Millettoelphidium Hayward and Parker in Hayward et al., 2025. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=1844910 on 2026-02-03
Date
action
by
original description
Hayward, B.W., Holzmann, M., Langer, M.R., Parker, J.H., Tsuchiya, M. (2025). Molecular and morphological taxonomy and biogeography of living Cribroelphidiidae, Elphidiellidae, Elphidiidae, Haynesinidae and related taxa (Foraminifera, Rotalioidea). <em>Micropaleontology.</em> 71: 433-808., available online at https://doi.org/10.47894/mpal.71.5.01 [details] Available for editors [request]
[request]From editor or global species database
Diagnosis Test planispiral, subevolute, bilaterally symmetrical;outline subcircular, often lobulate; profile moderately compressed,
parallel-sided to weakly convex; peripheral profile
rounded, lacking a keel or imperforate band; incised sutures radial,
slightly curved toward periphery; incised sutures and ponticuli
extend over the periphery; wide to moderately wide umbilicus
covered by a plate-shaped foliar extension that is ornamented
with large pseudospines/tubercles, no plug; ornament may include
radial and/or concentric ribs; primary aperture a row of
interiomarginal circular openings along the base of the apertural
face, although these are often obscured by pseudospines or papillae;
test wall texture finely perforate. [details]
Taxonomic remark This genus is distinguished from Elphidium
by the subevolute coiling and resulting wide umbilicus covered
by a plate-shaped foliar extension that is ornamented with
large pseudospines; from Cribroelphidium by its finely rather
than coarsely perforate test; from the similarly subevolute Protelphidium
by the presence of ponticuli and fossettes; from Nonion
by the presence of intercameral lacunae and open tuberculate umbilici.
In the type species, M. milletti, and also in M. oceanicum,
an umbilical plate that connects with the folium is formed in the
penultimate chamber and connects back to the test to form the
spiral umbilical canal. [details]
From editor or global species database
Image from typetaxon
Image from typetaxon
Image from typetaxon
Image from typetaxon