''Estlandia'' is a gonambonitid

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

. It is one of the endemic

brachiopod Brachiopods (), phylum (biology), phylum Brachiopoda, are a phylum of animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear e ...

s in the

Ordovician The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), Era, and the second of twelve periods of the Phanerozoic Eon (geology), Eon. The Ordovician spans 41.6 million years f ...

Baltoscandia Baltoscandia or the Baltoscandian Confederation is a geopolitical concept of a Baltic–Scandinavian ( Nordic) union comprising Denmark, Estonia, Finland, Iceland, Latvia, Lithuania, Norway, and Sweden. The idea was proposed by a Swedish Profes ...

. Currently, eight different species and subspecies of the genus have been recorded from the Aseri to Keila stages. The distribution of the genus ''Estlandia'' is confined to the Middle and Upper Ordovician of the North

Estonia Estonia, officially the Republic of Estonia, is a country in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea across from Sweden, to the south by Latvia, and to the east by Ru ...

n Confacies Belt and the northwestern part of the

Moscow Basin The Moscow Basin is a major sedimentary basin and tectonic structural feature in the stable East European Craton. It has been widely studied by Russian and Scandinavian geologists. Formation and geological history The Fennoscandia Shield and its ...

. The first notes on ''Estlandia'' date back to 1840. The genus name was first published in 1931.

References

Brachiopod genera Middle Ordovician first appearances Late Ordovician extinctions Fossils of Estonia Fossils of Russia {{Estonia-geo-stub