 | This article relies largely or entirely on a single source .(October 2023) |
| Schwagerinidae Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Sar |
| Clade: | Rhizaria |
| Phylum: | Retaria |
| Subphylum: | Foraminifera |
| Class: | Globothalamea (?) |
| Order: | † Fusulinida |
| Superfamily: | † Fusulinoidea |
| Family: | † Schwagerinidae Dunbar and Henbest, 1930 |
The Schwagerinidae comprise a family of large, generally fusiform, foraminiferans included in the Fusulinoidea, a superfamily of fusulinids, locally abundant during the later Carboniferous (Pennsylvanian) and most of the Permian.
M.L. Thompson (1964) gives the following diagnosis: Shell large, fusiform to irregularly cylindrical, planispiral, involute in most, irregularly uncoiled in some; spirotheca thick, composed of tectum and alveolar kariotheca; septa fluted in end zones of primitive genera, fluted completely across shell and to tops of chambers of more advanced genera; tummel singular in most forms, multiple in one genus; axial fillings absent to massive; chomata massive to slight.
As with all fusulinaceans, the Schagerinidae are a shallow water form which in places make up a significant portion of the sediment, now limestone. More familiar genera include Schwagerina , Triticites , and Parafusulina .