Species
Tetrada ventroconcava Schallreuter, 1976
Synonyymit
1990 Tetrada ventroconcava Schallreuter, 1976 — Schallreuter , fig. 2:2
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Superclass | Oligostraca |
| Class | Ostracoda |
| Subclass | Podocopa |
| Order | Palaeocopida |
| Suborder | Beyrichicopina |
| Palaeocopa | |
| Family | Ctenonotellidae |
| Genus | Tetrada |
| Subgenus | (Neotsitrella) |
| (Perplana) | |
| (Tallinnopsis) | |
| (Tetrada) | |
| Species | hibyi |
| ventroconcava | |
| Subspecies | troppenzorum |