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Links and literature
[1] Mergl M. (2002): Linguliformean and craniiformean brachiopods of the Ordovician (Třenice to Dobrotivá Formations) of the Barrandian, Bohemia, Acta Mus. Nat. Pragae, Ser. B, Hist. Nat., 58 (1–2): 1–82. Praha. ISSN 0036-5343 [as Cyrtonotreta osekensis Mergl, 2002]
Mergl M. (2002): Linguliformean and craniiformean brachiopods of the Ordovician (Třenice to Dobrotivá Formations) of the Barrandian, Bohemia, Acta Mus. Nat. Pragae, Ser. B, Hist. Nat., 58 (1–2): 1–82. Praha. ISSN 0036-5343 [as Cyrtonotreta osekensis Mergl, 2002]