Ditremaster mereirensis Azab, 1989
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
- Ditremaster mereirensis Azab, 1989
- Name authority
- Azab, 1989
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Echinodermata
- Class
- Echinoidea
- Order
- Spatangoida
- Family
- Palaeostomatidae
- Genus
- Ditremaster
- Extinction status
- Recorded extinct
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.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumEchinodermata
- subphylumEchinozoa
- classEchinoidea Schumacher, 1817
- subclassEuechinoidea Bronn, 1860
- infraclassIrregularia Latreille, 1825
- subterclassAtelostomata von Zittel, 1879
- orderSpatangoida L. Agassiz, 1840
- familyPalaeostomatidae Lovén, 1868
- genusDitremaster Munier-Chalmas, 1885
- speciesDitremaster mereirensis Azab, 1989
Close classified relatives
These entries share the source’s genus, Ditremaster. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Ditremaster aslaniani Poretskaya, 1974a | PalaeostomatidaeEchinodermata | Accepted speciesRecorded extinct |
| Ditremaster olbrechtsi Dartevelle, 1953 | PalaeostomatidaeEchinodermata | Accepted speciesRecorded extinct |
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.
- Azab, M. M. (1989). A new Ditremaster species (Spatangoida: Echinoidea) from the Middle Eocene of Egypt. Middle East Research Center Ain Shams University, Earth Science Series, 3: 179–183. 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:36Z5X. Classification follows source parent identifiers. English common names may vary by region.