| Hirsutospirellidae Temporal range: Late Triassic (Norian) |
|
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| (unranked): | SAR |
| (unranked): | Rhizaria |
| Phylum: | Retaria |
| Subphylum: | Foraminifera |
| Class: | Spirillinata |
| Order: | Involutinida |
| Family: |
Hirsutospirellidae Zaninetti,et al 1985 |
The Hirsutospirellidae, established for the Upper Triassic genus Hirsutospirella, are a family of Foraminifera within the Involutinida that produced calcareous tests with a proloculus followed by an undivided trochospirally enrolled tubular second chamber, in which the spiral side has prominent spinelike protrusions and umbilical side has a shallow umbilical filling.