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M. Georgieva Encheva, ?Phylogenetic development of the family Posidoniidae and the genera Daonella and Halobia (Bivalvia; Triassic)?, Geologica Balcanica, vol. 8, pp. 55-67, 1978.

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F.  Frech, Ueber Aviculiden von Palaeozoischen Habitus aus der Trias von Zacatecas. Mexico: Imp. Sec. d. Fomento, 1906, p. 10.