FR
FR · native · native
NATURAL HISTORY · CATALOGUE RECORD
Didymoceras stevensoni (Whitfield, 1877)
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
- Didymoceras stevensoni (Whitfield, 1877)
- Name authority
- (Whitfield, 1877)
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Mollusca
- Class
- Cephalopoda
- Order
- Ammonoidea
- Family
- Nostoceratidae
- Genus
- Didymoceras
- Extinction status
- Recorded extinct
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
- phylumMollusca
- classCephalopoda Cuvier, 1795
- orderAmmonoidea
- superfamilyTurrilitaceae
- familyNostoceratidae
- genusDidymoceras
- speciesDidymoceras stevensoni (Whitfield, 1877)
Close classified relatives
These entries share the source’s genus, Didymoceras. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Didymoceras awajiense (Yabe, 1901) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras californicum Anderson, 1958 | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras cheyennense (Meek & Hayden, 1856) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras cochleatus (Meek & Hayden, 1858) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras donezianum (Michailov, 1951) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras draconis (Stephenson, 1941) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras tenuicostatus (Meek & Hayden, 1858) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras tortus (Meek & Hayden, 1858) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras umbilicatus (Meek & Hayden, 1858) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras uncus (Meek & Hayden, 1858) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
| Didymoceras vespertinus (Conrad, 1874) | NostoceratidaeMollusca | Accepted speciesRecorded extinct |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Helicoceras stevensoni (Whitfield, 1877) (Whitfield, 1877) | synonym |
Documented distribution
Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.
US
US · native · native
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.
- Kennedy, W. J., Landman, N. H., Cobban, W. A., & Scott, G. R. (2000). Late Campanian (Cretaceous) heteromorph ammonites. Bulletin of the American Museum of Natural History: 1--, 88. 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:35YLD. Classification follows source parent identifiers. English common names may vary by region.