| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Helmetiidae
Taxonomy
Helmetiidae was named by Simonetta and Delle Cave (1975).
It was assigned to Helmetiida by Losso et al. (2025).
It was assigned to Helmetiida by Losso et al. (2025).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1975 | Helmetiidae Simonetta and Delle Cave |
| 2025 | Helmetiidae Losso et al. p. 5 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. R. Losso et al. 2025 | Concilitergans in which the thorax has tergites with non-effaced boundaries and well-developed pleural spines, and a pygidium with variable number of posterolateral spines and a medial terminal spine
with a broad base. |