OTT, ERNST - Segmentierte Kalkschwämme (Sphinctozoa) aus der alpinen Mitteltrias und ihre bedeutung als Riffbildner im Wettersteinkalk.

1967. Bayer. Akad. Wiss. Math.-Naturw. Kl. Abh. N.F. Hft. 131; 96 p. 9 fig. 10 plts. h.t. Orig. wrps. very good, 4to.

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