Subclass

Osteostraci Lankester, 1868

osteostracans

Selection of related publications

Märss, T., Wilson, M. V., Viljus, M. 2022. Endolymphatic structures in headshields of the osteostracan genus Tremataspis (Agnatha) from the Silurian of Estonia. Estonian Journal of Earth Sciences 71, 3, 135-156. DOI:10.3176/earth.2022.10

Bremer, O., Qu, Q., Sanchez, S., Märss, T., Fernandez, V., Blom, H. 2021. The emergence of a complex pore‐canal system in the dermal skeleton of Tremataspis (Osteostraci). Journal of Morphology 282, 8, 1141-1157. DOI:10.1002/jmor.21359

Tinn, O., Märss, T. 2018. The earliest osteostracan Kalanaspis delectabilis gen. et sp. nov. from the mid-Aeronian (mid-Llandovery, lower Silurian) of Estonia. Journal of Vertebrate Paleontology 38, 1, e1425212. DOI:10.1080/02724634.2017.1425212

Märss, T., Afanassieva, O., Blom, H. 2014. Biodiversity of the Silurian osteostracans of the East Baltic. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 105, 2, 73-148. DOI:10.1017/S1755691014000218

Afanassieva, O. B., Märss, T. 2014. New Data on the Exoskeleton of the Osteostracan Genus Aestiaspis (Agnatha) from the Silurian of Saaremaa Island (Estonia) and the Severnaya Zemlya Archipelago (Russia). Paleontologicheski Zhurnal 48, 1, 74-78. DOI:10.1134/S003103011401002X

Märss, T. 2006. Exoskeletal ultrasculpture of early vertebrates. Journal of Vertebrate Paleontology 26, 2, 235-252. DOI:10.1671/0272-4634(2006)26[235:EUOEV]2.0.CO;2

Afanassieva, O. B. 2004. Subclass Osteostraci. Agnathans and Early Fishes, pp. 210-267. GEOS.

Märss, T. 2002. Silurian and Lower Dewonian anaspids (Agnatha) from Severnaya Zemlya (Russia). Geodiversitas 24, 1, 123-137.

Otto, M., Laurin, M. 1999. Osteostracan tesserae from the Baltic Middle Devonian: morphology and microanatomy. Neues Jahrbuch für Mineralogie, Geologie und Paläontologie. Monatshefte: Abt. B. Geologie, Paläontologie 1999, 8, 464-476. DOI:10.1127/njgpm/1999/1999/464

Mark-Kurik, E., Janvier, P. 1997. A new tremataspidid (Vertebrata, Osteostraci, Thyestiida) from the Devonian of northern Urals, with remarks on tannuaspidids. Neues Jahrbuch für Geologie und Paläontologie. Abhandlungen 206, 3, 405-421. DOI:10.1127/njgpa/206/1997/405

Afanassieva, O. B., Märss, T. 1997. Exoskeleton Structure and the Distribution of Aestiaspis viitaensis (Agnatha) from the Silurian of Estonia. Paleontological Journal 31, 6, 641-647.

Mark-Kurik, E., Janvier, P. 1995. Early Devonian osteostracans from Severnaya Zemlya, Russia. Journal of Vertebrate Paleontology 15, 3, 449-462. DOI:10.1080/02724634.1995.10011241

Janvier, P., Lelievre, H. 1994. A new tremataspid osteostracan, Aestiaspis viitaensis n. g., n. sp., from the Silurian of Saaremaa, Estonia. Proceedings of the Estonian Academy of Sciences. Geology 43, 3, 122-128. DOI:10.3176/geol.1994.3.02

Afanassieva, O. B. 1990. Novyj Brenneviaspis (Agnatha) iz nižnedevonskih otloženij Podolii. Paleontologicheski Zhurnal 4, 128-131.

Märss, T. 1986. Silurian Vertebrates of Estonia and West Latvia. Fossilia Baltica 1. Fossilia Baltica 1, 1-104. Valgus.

Belles-Isles, M., Janvier, P. 1984. Nouveaux Ostéostracés du Dévonien Inférieur de Podolie (RSS d 'Ukraine). Acta Palaeontologica Polonica 29, 3-4, 195-208.

Lyarskaya, L. A. 1981. Cefalaspidy. Devon i karbon Pribaltiki, pp. 437–440. Zinatne.

Lyarskaya, L. 1981. Pancirnye ryby devona Pribaltiki. Asterolepididae. pp. 1-152. Zinatne.

Märss, T. 1977. Structure of Tolypelepis from the Baltic Upper Silurian. Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология 26, 1, 57-69. DOI:10.3176/chem.geol.1977.1.09

Heintz, A 1969. New agnaths from Ringerike Sandstone. pp. .

Ritchie, A. 1967. Ateleaspis tessellata Traquair, a non-cornuate cephalaspid from the Upper Silurian of Scotland. Zoological Journal of the Linnean Society 47, 311, 69–81. DOI:10.1111/j.1096-3642.1967.tb01396.x

Rohon, J. V. 1892. Die obersilurischen Fische von Oesel. I Theil. Thyestidae und Tremataspidae. Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg 38, 13, 1-88.

Eichwald, E. 1858. Beitrag zur geographischen Verbreitung der fossilen Thiere Russlands. Alte Periode (Fortsetzung. S. Bulletin 1851. N 1. pag. 192). Klasse der Krustazeen. Klasse der Fische. Klasse der Reptilen. Bulletin of the Moscow Society of Naturalists. Geological series 30, IV, 305-354.

List of species

1. Aestiaspis viitaensis Janvier et Lelievre, 1994 | Rootsiküla Stage→Paadla Stage

2. Afanassiaspis porata Otto et Laurin, 1999 | Pärnu Stage

3. Ateleaspis robustus (Kiaer, 1911) | Ludlow

4. Ateleaspis tessellata Traquair, 1899 | Wenlock→Ludlow

5. Balticaspis latvica Lyarskaya, 1981 | Eifelian

6. Dartmuthia gemmifera Patten, 1931 | Paadla Stage

7. Dartmuthia procera Märss, Afanassieva et Blom, 2014 | Paadla Stage→Kuressaare Stage

8. Eldaaspis miklii Märss, Afanassieva et Blom, 2014 | Rootsiküla Stage

9. Hirella denisoni Heintz, 1969 | Ludlow

10. Kalanaspis delectabilis Tinn et Märss, 2018 | Raikküla Stage

11. Meelaidaspis gennadii Märss, Afanassieva et Blom, 2014 | Rootsiküla Stage

12. Oeselaspis pustulata (Patten, 1931) | Rootsiküla Stage→Paadla Stage

13. Ohesaareaspis ponticulata Märss, Afanassieva et Blom, 2014 | Ohesaare Stage

14. Procephalaspis oeselensis (Robertson, 1939) | Paadla Stage

15. Saaremaaspis mickwitzi (Rohon, 1892) | Rootsiküla Stage

16. Tahulaspis ordinata Märss, Afanassieva et Blom, 2014 | Kuressaare Stage

17. Tahulaspis praevia Märss, Afanassieva et Blom, 2014 | Paadla Stage

18. Thyestes verrucosus Eichwald, 1854 | Rootsiküla Stage

19. Tremataspis mammillata Patten, 1931 | Paadla Formation→Paadla Stage

20. Tremataspis milleri Patten, 1931 | Rootsiküla Stage→Paadla Stage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Chordata
Subphylum	Vertebrata
Superclass	Agnatha
Class	Cephalaspidomorphi
Subclass	Anaspida
	Galeaspida
	Osteostraci
Order	Ateleaspidiformes
	Benneviaspidiformes
	Cephalaspidiformes
	Tremataspidiformes
Subclass	Petromyzoniformes