Genus

Tvaerenella Jaanusson, 1957

Selection of related publications

Kivioja, K. 2007. Osmussaare settesoonte ostrakoodifauna [Magistritöö. Juhendaja: O. Tinn]. pp. . Tartu Ülikool.

Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222. Tartu University Press.

Sidaravičiene, N. 1992. Ordovician ostracods of Lithuania. pp. 1-252. LitNIIGRI.

Schallreuter, R. 1985. Aurel Krause's "Geschiebe mit Beyrichia rostrata" (Ostracoda; Ordoviz). Mitteilungen aus dem Geologisch-Paläontologischen Institut der Universität Hamburg 59, 99-136.

Schallreuter, R. 1981. Ordovician ostracodes from Baltoscandia. GFF 103, 1, 61-71. DOI:10.1080/11035898109455206

Pranskevičius, A. 1972. South Baltic Silurian Ostracoda. pp. 1-280. Mintis.

Nõlvak, J. 1972. A characterization of the boundary beds of the Kukruse and Idavere stages in the Lipu boring. Loodusuurijate Seltsi Aastaraamat, pp. 39-59. Loodusuurijate Selts.

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.

Jaanusson, V. 1957. Middle Ordovician Ostracodes of Central and Southern Sweden. Bulletin of the Geological Institutions of the University of Uppsala 37, 17, 173-442.

Sarv, L. I. 1956. New species of ostracodes of the Vasalemma Stage (Upper Ordovician of Estonia). ENSV TA Geoloogia Instituudi Uurimused I, 30-40.

Thorslund, P. 1940. On the Chasmops series of Jämtland and Södermanland (Tvären). Sveriges Geologiska Undersökning 1-191.

Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia. Tartu Ülikooli juures oleva Loodusuurijate Seltsi Aruanded 43, 65-138.

Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused 50, 1-58.

List of species

1. Tvaerenella carinata (Thorslund, 1940) | Upper Ordovician

2. Tvaerenella expedita Sarv, 1959 | Vormsi Stage→Porkuni Stage

3. Tvaerenella granosa (Öpik, 1937) | Kukruse Stage

4. Tvaerenella longa (Sarv, 1956) | Keila Stage

5. Tvaerenella magna (Sarv, 1956) | Oandu Stage

6. Tvaerenella modesta Sarv, 1959 | Kunda Stage

7. Tvaerenella plana (Krause, 1889) | Porkuni Stage

8. Tvaerenella postpleta Schallreuter, 1981 | Middle Ordovician

9. Tvaerenella pulex (Öpik, 1937) | Kukruse Stage

10. Tvaerenella stossmeisteri Schallreuter, 1985 | Keila Stage

11. Tvaerenella tuberculata (Krause, 1892) | Keila Stage

12. Tvaerenella umbilicata (Kummerow, 1924) | Vormsi Stage→Porkuni Stage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Crustacea
Superclass	Oligostraca
Class	Ostracoda
Subclass	Podocopa
Order	Palaeocopida
Suborder	Beyrichicopina
	Palaeocopa
Superfamily	Hollinacea
Family	Tvaerenellidae
Subfamily	Tvaerenellinae
Genus	Duringia
	Euprimites
	Otraczetia
	Piretia
	Piretilina
	Retiprimites
	Tvaerenella
Species	carinata
	expedita
	granosa
	longa
	magna
	modesta
	plana
	postpleta
	pulex
	stossmeisteri
	tuberculata
	umbilicata
Genus	Uhakiella
	Vendona