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NATURAL HISTORY · CATALOGUE RECORD

Haplodiscus piger Weldon, 1888

Source-backed taxonomic record

Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.

Identity & source status

Scientific name
Haplodiscus piger Weldon, 1888
Name authority
Weldon, 1888
Rank
species
Accepted status
accepted
Kingdom
Animalia
Phylum
Xenacoelomorpha
Order
Acoela
Family
Convolutidae
Genus
Haplodiscus
Extinction status
Not supplied by this source

Source habitat flags: Marine: yes · Freshwater: no · Terrestrial: no. These do not form a complete habitat description.

Classification family tree

Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.

  1. domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
  2. kingdomAnimalia
  3. phylumXenacoelomorpha Philippe, Brinkmann, Copley, Moroz, Nakano, Poustka, Wallberg, Peterson & Telford, 2011
  4. subphylumAcoelomorpha Ehlers, 1985
  5. orderAcoela Uljanin, 1870
  6. suborderBursalia Jondelius, Wallberg, Hooge & Raikova, 2011
  7. infraorderCrucimusculata Jondelius, Wallberg, Hooge & Raikova, 2011
  8. superfamilyAberrantospermata Jondelius, Wallberg, Hooge & Raikova, 2011
  9. familyConvolutidae Graff, 1905
  10. genusHaplodiscus Weldon, 1888
  11. speciesHaplodiscus piger Weldon, 1888

Close classified relatives

These entries share the source’s genus, Haplodiscus. They are not necessarily the closest relatives established by molecular evidence.

SpeciesClassificationSource status
Haplodiscus ovatus Bohmig, 1895ConvolutidaeXenacoelomorphaAccepted speciesExtinction status not supplied
Haplodiscus weldoni Bohmig, 1895ConvolutidaeXenacoelomorphaAccepted speciesExtinction status not supplied

Browse 3 records assigned to Convolutidae.

Names & synonyms

Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.

Recorded nameSource status
Haplodiscus ussowi Sabussow, 1896 Sabussow, 1896synonym
Haplodiscus orbicularis Bohmig, 1895 Bohmig, 1895synonym

Source literature & publication evidence

References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.

  1. Weldon, W. F. R. (1889). Haplodiscus piger, a new pelagic organism from the Bahamas. Q J Microsc Sci New Ser, 29:1–29:8. Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references

Origins, evidence & remaining research

Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.

Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.

Dataset citation & attribution

This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11

Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.

Stable key: col:3JMGJ. Classification follows source parent identifiers. English common names may vary by region.