|
Oeseliidae
''Oeselia mosaica'' is a fossil jawless fish and is the only species in its genus and in the family Oeseliidae (Oesel being the old name for Saaremaa, Saaremaa Island in Estonia). It is a member of an extinct family of Thelodonti, thelodonts or jawless fishes. The family and genus were established along with the description of the species by Tiuu Märss in 2005. Morphology Oeseliidae are distinct in the nature of their scales, as are most of the Thelodonti, thelodonts, as scales tend to preserve in higher quality and quantity. Their scales are very fine, with a network-like pattern. The shapes of the scales are extremely variable, though are typically curved, and are all separated by fine grooves. Scales in general are very small, ranging from 0.2 mm to 0.45 mm long, and are flat, facing anteriorly. Oeseliidae'','' as with most Thelodonti, thelodonts, can have their scales classified into head varieties, transitional varieties, and trunk varieties. The head scales possess a cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thelodonti
Thelodonti (from Greek: "feeble teeth")Maisey, John G., Craig Chesek, and David Miller. Discovering fossil fishes. New York: Holt, 1996. is a class of extinct jawless fishes with distinctive scales instead of large plates of armor. There is much debate over whether the group of Palaeozoic fish known as the Thelodonti (formerly coelolepids) represent a monophyletic grouping, or disparate stem groups to the major lines of jawless and jawed fish. Thelodonts are united in possession of "thelodont scales". This defining character is not necessarily a result of shared ancestry, as it may have been evolved independently by different groups. Thus the thelodonts are generally thought to represent a polyphyletic group, although there is no firm agreement on this point. On the basis that they are monophyletic, they are reconstructed as being ancestrally marine and invading freshwater on multiple occasions. "Thelodonts" were morphologically very similar, and probably closely related, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saaremaa
Saaremaa is the largest island in Estonia, measuring . The main island of Saare County, it is located in the Baltic Sea, south of Hiiumaa island and west of Muhu island, and belongs to the West Estonian Archipelago. The capital of the island is Kuressaare, which in January 2018 had 13,276 inhabitants. The whole island had a recorded population in January 2020 of 31,435. Etymology In old Scandinavian sources, Saaremaa is called ''Eysysla'' and in the Icelandic Sagas ''Eysýsla'' (Old Norse: ), meaning "the district (land) of island". The island is called ''Saaremaa'' in Estonian language, Estonian, and in Finnish language, Finnish ''Saarenmaa''—literally "isle land" or "island land",Toomse, Liine. "10 Estonian Islands You Should Visit." http://www.traveller.ee/blog/tallinn/10-estonian-islands-you-should-visit. Retrieved 8 March 2016. i.e. the same as the Scandinavian name for the island. The old Scandinavian name is also the origin of the island's name in Danish language, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estonia
Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, and to the east by Lake Peipus and Russia. The territory of Estonia consists of the mainland, the larger islands of Saaremaa and Hiiumaa, and over 2,200 other islands and islets on the eastern coast of the Baltic Sea, covering a total area of . The capital city Tallinn and Tartu are the two largest urban areas of the country. The Estonian language is the autochthonous and the official language of Estonia; it is the first language of the majority of its population, as well as the world's second most spoken Finnic language. The land of what is now modern Estonia has been inhabited by '' Homo sapiens'' since at least 9,000 BC. The medieval indigenous population of Estonia was one of the last " pagan" civilisations in Europe to adopt Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
