Genus
Tetrada Neckaja, 1958
Aiheeseen liittyvät julkaisut
Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222. Tartu University Press.
Meidla, T. 1986. Neue Ostrakoden aus dem Ordovizium des Baltikums. Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 35, 1, 10-19. DOI:10.3176/geol.1986.1.02
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.
Neckaja, A. I. 1953. Tetradellidy ordovika Pribaltiki i ih stratigraficheskoe znachenie. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 309-363. Gostoptehizdat.
List of species
2. Tetrada (Perplana) longata (Sarv, 1959) | Keila Stage
3. Tetrada (Perplana) pabradensis Sidaravičiene, 1992 | Keila Stage
6. Tetrada (Tallinnopsis) gudensis Sidaravičiene, 1992 | Keila Stage
11. Tetrada (Tetrada) grandis (Sarv, 1959) | Keila Stage
19. Tetrada hibyi Schallreuter, 1988 | Ordovician
20. Tetrada ventroconcava Schallreuter, 1976 | Ordovician
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Luokittelu
Organism group | Biota |
Kingdom | Animalia |
Phylum | Arthropoda |
Subphylum | Crustacea |
Superclass | Oligostraca |
Class | Ostracoda |
Subclass | Podocopa |
Order | Palaeocopida |
Suborder | Beyrichicopina |
Palaeocopa | |
Family | Ctenonotellidae |
Subfamily | Tallinnellinae |
Genus | Cerninella |
Homeokiesowia | |
Laevanotella | |
Neringa | |
Tallinnella | |
Tallinnellina | |
Tetrada | |
Subgenus | (Neotsitrella) |
(Perplana) | |
(Tallinnopsis) | |
(Tetrada) | |
Species | hibyi |
ventroconcava | |
Subspecies | troppenzorum |