Foraminifera taxon details
Hispidoelphidium Parker in Hayward et al., 2025
1844909 (urn:lsid:marinespecies.org:taxname:1844909)
accepted
Genus
Elphidium hispidulum Cushman, 1936 accepted as Hispidoelphidium hispidulum (Cushman, 1936) (type by original designation)
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, bilaterally symmetrical; sutures radial,
straight to very slightly curved, narrow, incised (obscured by
Taxonomic remark This genus is distinguished from Elphidium
by the absence of true ponticuli and retral processes; from
Protelphidium,...
straight to very slightly curved, narrow, incised (obscured by
Diagnosis Test planispiral, bilaterally symmetrical; sutures radial,
straight to very slightly curved, narrow, incised (obscured by
ornament in type species); ponticuli and fossettes absent; chambers
internally simple, with no floors; chamber walls bend inward
posteriorly and fuse to the preceding septal face to form narrow
intercameral lacunae, coarsely perforate (between ornament in
type species); spiral umbilical canal system branching and connected
to intercameral lacunae; umbilicus has a large perforate
plug, perforations connect to the spiral umbilical canal; aperture
a single row of small interiomarginal openings; foramen a single
row of openings, no obvious modification from the aperture. [details]
straight to very slightly curved, narrow, incised (obscured by
ornament in type species); ponticuli and fossettes absent; chambers
internally simple, with no floors; chamber walls bend inward
posteriorly and fuse to the preceding septal face to form narrow
intercameral lacunae, coarsely perforate (between ornament in
type species); spiral umbilical canal system branching and connected
to intercameral lacunae; umbilicus has a large perforate
plug, perforations connect to the spiral umbilical canal; aperture
a single row of small interiomarginal openings; foramen a single
row of openings, no obvious modification from the aperture. [details]
Taxonomic remark This genus is distinguished from Elphidium
by the absence of true ponticuli and retral processes; from
Protelphidium,...
Taxonomic remark This genus is distinguished from Elphidium
by the absence of true ponticuli and retral processes; from
Protelphidium, Australononion, and Toddinella by the large perforate
umbilical plug. The type species has a large perforate umbilical
plug that shows similarities to other species in the craticulatum
and formosum morphogroups of Elphidium. It differs from
these in the lack of true ponticuli and retral processes, and further
by the more complex canal system comprising a spiral umbilical
canal that branches and connects to intercameral lacunae. Loeblich
and Tappan (1987) included the type species of this genus
(Elphidium hispidulum) in their concept and description of Parrellina
Thalmann 1951 based on the lack of retral processes and
prominent radial ornament. [details]
by the absence of true ponticuli and retral processes; from
Protelphidium, Australononion, and Toddinella by the large perforate
umbilical plug. The type species has a large perforate umbilical
plug that shows similarities to other species in the craticulatum
and formosum morphogroups of Elphidium. It differs from
these in the lack of true ponticuli and retral processes, and further
by the more complex canal system comprising a spiral umbilical
canal that branches and connects to intercameral lacunae. Loeblich
and Tappan (1987) included the type species of this genus
(Elphidium hispidulum) in their concept and description of Parrellina
Thalmann 1951 based on the lack of retral processes and
prominent radial ornament. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Hispidoelphidium Parker in Hayward et al., 2025. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=1844909 on 2026-02-05
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, bilaterally symmetrical; sutures radial,straight to very slightly curved, narrow, incised (obscured by
ornament in type species); ponticuli and fossettes absent; chambers
internally simple, with no floors; chamber walls bend inward
posteriorly and fuse to the preceding septal face to form narrow
intercameral lacunae, coarsely perforate (between ornament in
type species); spiral umbilical canal system branching and connected
to intercameral lacunae; umbilicus has a large perforate
plug, perforations connect to the spiral umbilical canal; aperture
a single row of small interiomarginal openings; foramen a single
row of openings, no obvious modification from the aperture. [details]
Taxonomic remark This genus is distinguished from Elphidium
by the absence of true ponticuli and retral processes; from
Protelphidium, Australononion, and Toddinella by the large perforate
umbilical plug. The type species has a large perforate umbilical
plug that shows similarities to other species in the craticulatum
and formosum morphogroups of Elphidium. It differs from
these in the lack of true ponticuli and retral processes, and further
by the more complex canal system comprising a spiral umbilical
canal that branches and connects to intercameral lacunae. Loeblich
and Tappan (1987) included the type species of this genus
(Elphidium hispidulum) in their concept and description of Parrellina
Thalmann 1951 based on the lack of retral processes and
prominent radial ornament. [details]
From editor or global species database
Image from typetaxon
Image from typetaxon
