perekond
Tetradella Ulrich, 1890
Valik taksonit käsitlevast teaduskirjandusest
Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222.  Tartu University Press. 
Abushik, A., Sarv, L. 1983. Ostracodes from the Moldovo Stage of Podolia.  Lower Paleozoic paleontology of Baltics and Podolia, pp. 101-134.   ENSV Teaduste Akadeemia. 
Schallreuter, R. 1978. On Tetradella pentaloculata Schallreuter sp. nov..  A Stereo-Atlas of Ostracod Shells. Volume 5, pp. 65-72.   British Micropalaeontological Society. 
Sidaravičiene, N. 1971. New ostracoda from Middle and Upper Ordovician of Lithuania.  Palaeontology and stratigraphy of the Baltic and Byelorussia. Number III, pp. 23-36.   Mintis. 
Sarv, L. I. 1962. Ostracods from the Porkuni stage and Llandovery of Estonia.  ENSV TA Geoloogia Instituudi Uurimused   IX,      95-141.
Sarv, L. 1959. Ordovician ostracodes in the Estonian S.S.R..  ENSV TA Geoloogia Instituudi Uurimused   IV,      1-210.
Neckaja, A. I. 1953. Tetradellidy ordovika Pribaltiki i ih stratigraficheskoe znachenie.  Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI)         309-363.  Gostoptehizdat. 
Neckaja, A. I. 1952. Novye vidy ostrakod iz otloženij ordovika severo-zapada Russkoj platformy.  Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI)         217-232.  Gostoptexizdat. 
Leitud liigid
2. Tetradella extenuata Sarv, 1962 | Adavere lade
3. Tetradella intricata Sidaravichiene, 1971 | Pirgu lade
8. Tetradella triloculata Schallreuter, 1978 | Pirgu lade
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Klassifikatsioon
| organismirühm | Biota | 
| riik | Animalia | 
| hõimkond | Arthropoda | 
| alamhõimkond | Crustacea | 
| ülemklass | Oligostraca | 
| klass | Ostracoda | 
| alamklass | Podocopa | 
| selts | Palaeocopida | 
| alamselts | Beyrichicopina | 
| ülemsugukond | Tetradelloidea | 
| sugukond | Tetradellidae | 
| alamsugukond | Tetradellinae | 
| ülemperekond | Winchellatia | 
| perekond | Ahla | 
| Ceratopsis | |
| Consonopsis | |
| Dilobella | |
| Foramenella | |
| Glossopsis | |
| Ogmoopsis | |
| Pleurodella | |
| Polyceratella | |
| Tetradella | |
| liik | egorowi | 
| extenuata | |
| intricata | |
| pentaloculata | |
| plicatula | |
| pulchra | |
| separata | |
| triloculata | |
| perekond | Utalina |