Genus
Rigidella Öpik, 1937
Aiheeseen liittyvät julkaisut
Tinn, O., Meidla, T. 2004. Phylogenetic relationships of Early-Middle Ordovician ostracods of Baltoscandia. Palaeontology 47, 2, 199-221. DOI:10.1111/j.0031-0239.2004.00369.x
Tolmacheva, T., Egerquist, E., Meidla, T., Tinn, O., Holmer, L. 2003. Faunal composition and dynamics in unconsolidated sediments: a case study from the Middle Ordovician of the East Baltic. Geological Magazine 140, 1, 31-44. DOI:10.1017/S001675680200701X
Ivantsov, A. Yu., Melnikova, L. M. 1998. The lower Ordovician Volkhov and Kunda horizons and characteristics of trilobites and ostracodes (the Volkhov River, Leningrad region). Stratigraphy and Geological Correlation 6, 5, 47-63.
Sarv, L. 1959. Ordovician ostracodes in the Estonian S.S.R.. ENSV TA Geoloogia Instituudi Uurimused IV, 1-210.
Öpik, A. 1935. Ostracoda from the lower Ordovician Megalaspis-limestone of Estonia and Russia. Tartu Ülikooli juures oleva Loodusuurijate Seltsi Aruanded 42, 3/4, 28-38.
List of species
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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 | Steusloffiinae |
| Genus | Henningsmoenia |
| Pseudostrepula | |
| Rigidella | |
| Species | dubia |
| mitis | |
| Genus | Steusloffia |