Longodus
Encyclopedia
Longodus is an extinct genus of thelodont
, placed in its own family – Longopdidae – which existed in what is now Estonia
during the Ludlow epoch of the upper Silurian
period. The type
and only species is Longodus acicularis.
Thelodonti
Thelodonts are a group of small, extinct jawless fishes with distinctive scales instead of large plates of armor....
, placed in its own family – Longopdidae – which existed in what is now Estonia
Estonia
Estonia , officially the Republic of Estonia , is a state in the Baltic region of Northern Europe. It is bordered to the north by the Gulf of Finland, to the west by the Baltic Sea, to the south by Latvia , and to the east by Lake Peipsi and the Russian Federation . Across the Baltic Sea lies...
during the Ludlow epoch of the upper Silurian
Silurian
The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 Mya , to the beginning of the Devonian Period, about 416.0 ± 2.8 Mya . As with other geologic periods, the rock beds that define the period's start and end are well identified, but the...
period. The type
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
and only species is Longodus acicularis.