dinoflagellate antapical horn

GO:0097687 · Other · Subcellular region · Proposed

A horn-shaped dinoflagellate antapex found in thecate species. [GO:0097687]

Part of: dinoflagellate hypocone (GO:0097614)

Taxonomic distribution

NCBITaxon:2864 Dinophyceae — VARIABLE: GO:0097687 defines the dinoflagellate antapical horn as a horn-shaped dinoflagellate antapex found in thecate species. [GO:0097687]

The dinoflagellate antapical horn is a horn-shaped, thecate specialization of the dinoflagellate antapex within the hypocone.

Subject	Predicate	Object	Evidence
dinoflagellate antapical horn	is a	dinoflagellate antapex	`GO:0097687` The QuickGO GO:0097687 history records an is_a relation to GO:0097684. `GO:0097684` The QuickGO GO:0097684 children endpoint lists GO:0097687 as an is_a child term.
dinoflagellate antapical horn	is part of	dinoflagellate hypocone	`GO:0097687` QuickGO records GO:0097684 as the direct is_a parent of GO:0097687; paired with GO:0097684 part_of GO:0097614, that parentage transmits hypocone parthood. `GO:0097684` The QuickGO GO:0097684 history records a part_of relation to GO:0097614.
dinoflagellate antapex	is part of	dinoflagellate hypocone	`GO:0097684` The QuickGO GO:0097684 history records a part_of relation to GO:0097614. `GO:0097614` The QuickGO GO:0097614 payload lists GO:0097684 as a part_of child term.

CURATION_TODO (OPEN): Add antapical-horn molecular components only after directly localized constituents and exact source-neutral family groundings have been identified. GO defines the dinoflagellate antapical horn morphologically as a horn-shaped antapex of thecate species, but this pass did not find exact family-level evidence for antapical-horn-specific molecular constituents.
INTERPRETATION (RESOLVED): Keep the horn-shaped thecate dinoflagellate antapical horn separate from the general dinoflagellate antapex unless curating the broader GO:0097684 class. QuickGO identifies GO:0097687 as an is_a child of GO:0097684 and GO:0097687 defines a horn-shaped antapex found in thecate species, so the antapical horn should remain a specialized child class of the general antapex.

GO:0097687 Gene Ontology cellular-component term for the horn-shaped dinoflagellate antapical horn of thecate species.
GO:0097684 Gene Ontology cellular-component term for the dinoflagellate antapex, which the QuickGO GO:0097687 history records as the direct is_a parent.
GO:0097614 Gene Ontology cellular-component term for the dinoflagellate hypocone that contains the parent GO:0097684 antapex.
GO:0110165 Gene Ontology cellular-component parent term for cellular anatomical structure.
PMID:7002229 PubMed record for Taylor 1980, the subscription Biosystems dinoflagellate-evolution review cited by GO:0097687; EuropePMC reported no PMC, open-access, full-text, or PDF route in this pass.
DOI:10.1016/0303-2647(80)90006-4 Crossref and EuropePMC metadata identify DOI:10.1016/0303-2647(80)90006-4 as the Taylor 1980 Biosystems review behind PMID:7002229; no article-body text was reachable through the checked metadata routes, so this record uses it only as bibliographic corroboration for the GO definition xref.

2026-10-02T21:38:21Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-10-02T21:39:08Z codex · EXPANDED_RECORD — Added GO antapex parentage, hypocone parthood, Dinophyceae and thecate taxon evidence, antapical-horn/antapex/hypocone topology, Taylor 1980 metadata-only evidence, and curation discussions for molecular components and the antapical-horn/antapex boundary.
2026-10-02T21:56:16Z codex · ADDRESSED_PR_REVIEW — Addressed PR #1945 review issues #1946 and #1947 by citing GO:0097687 history for direct antapex parentage and clarifying that hypocone parthood is inherited through GO:0097684.