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

Acroteta minima		p5127
Acrothele gigantea	Mergl a Šlehoferová (1990), Pl. IX, fig. 5	MM284
Acrothele gigantea		YA1304
Acrothele gigantea		p1505
Acrothele gigantea		YA1297
Acrothele gigantea		YA1299
Acrothele gigantea	Mergl a Šlehoferová (1990), Pl. XI, fig. 3.	YA1324
Acrothele gigantea	Mergl a Šlehoferová (1990), Pl. XI, fig. 4, 6	YA1305
Acrothele gigantea		YA1298
Acrothele quadrilineata Pompeckj, 1895		CW1067
Acrothele		MŠ1261
Acrothele		BB479
Acrothele		YA1047
Acrotreta		MŠ3366
Acrotreta		MŠ3365
Apheoorthina ferrigena		p5975
Botsfordia snajdri		RŠ103
Careniellus nigriculus (Havlíček, 1999)		AH98
Careniellus nigriculus (Havlíček, 1999)		AH41
Careniellus nigriculus (Havlíček, 1999)		AH120

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