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Linguliformea (Linguliforms)

      Linguliformea is a subphylum of former inarticulate brachiopods. These were the earliest of brachiopods, ranging from the Cambrian into the Holocene. They rapidly diversified during the Cambrian into the Ordovician, but most families went extinct by the end of the Devonian.The articulation in these brachiopods is lacking. These brachiopods have adductor and oblique muscles, but no diductor muscles. The anus is located at the side of the body. The pedicle is a hollow extension of the ventral body wall. Posterior body wall separates dorsal and ventral mantles. The shells are usually made up of apatite (calcium phosphate), however rare cases have calcite or aragonite shells.

Source: http://en.wikipedia.org/wiki/Linguliformea


 

MS_1918
Discina MŠ1918
MM293
Luhotreta pompeckji MM293
MS_1823
Paterula bohemica MŠ1823
MM405
Thysanotos siluricus MM405
MM437
Westonia fatkai MM437
MM433
Westonia fatkai MM433
MM510
Westonia fatkai MM510
   

In the Virtual Museum there are total 764 samples

Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]