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

Vandalotreta valfra		MM353
Vandalotreta valfra		MM354
Vandalotreta valfra		MM357
Vandalotreta valfra		MM356
Vandalotreta valfra		MM363
Vandalotreta valfra	Mergl (1988a), Pl. I, fig. 3	MM336
Vandalotreta valfra	Mergl (1988a), Pl. I, fig. 1	MM343
Westonia fatkai	Mergl a Šlehoferová (1990), Pl. VI, fig. 10	MM399
Westonia fatkai		MM433
Westonia fatkai		MM435
Westonia fatkai		MM429
Westonia fatkai		MM436
Westonia fatkai		MM437
Westonia fatkai	Mergl a Šlehoferová (1990), Pl. VI, fig. 11	MM398
Westonia fatkai		MM438
Westonia fatkai	Fatka et al. (1992), Pl. IV, fig. 7	MM510
Westonia fatkai		MM428
Westonia fatkai		MM430
Westonia fatkai		MM434
Westonia fatkai		MM431

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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]