Tryblidium reticulatum is an exctinct species of a paleozoic 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...

 monoplacophora

Monoplacophora

Monoplacophora, meaning "bearing one plate", is a polyphyletic class of mollusks with a cap-like shell, living on the bottom of deep sea. Extant representatives were unknown until 1952; previously they were known only from the fossil record.- Definition :...

n.

This species have been discovered and originally described by Gustaf Lindström

Gustaf Lindström

Gustaf Lindström was a Swedish paleontologist.He was born in Visby on Gotland. In 1848 he entered Uppsala University, and in 1854 he took his doctor's degree...

 from Silurian of Gotland

Gotland

Gotland is a county, province, municipality and diocese of Sweden; it is Sweden's largest island and the largest island in the Baltic Sea. At 3,140 square kilometers in area, the region makes up less than one percent of Sweden's total land area...

in Sweden in 1880. It have been living in shallow water.

Shell description

The length of the shell is 43 mm, width 31 mm and the height of the shell is 10 mm.

There are visible muscular attachment scars on the ventral view.

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