Kionidella excelsa Koschinsky, 1885

Moissette, Pierre, Antonarakou, Assimina, Kontakiotis, George, Cornée, Jean-Jacques & Karakitsios, Vasileios, 2021, Bryozoan faunas at the Tortonian-Messinian transition. A palaeoenvironmental case study from Crete Island, eastern Mediterranean, Geodiversitas 43 (26), pp. 1365-1400 : 1385

Kionidella excelsa Koschinsky, 1885

( Fig. 11 E-F)

Kionidella excelsa Koschinsky, 1885: 68, pl. 7, figs 5-12. — Malecki 1963: 133, fig. 58, pl. 15, fig. 1. — Braga 1975, p. 147, pl. 3, fig. 67. — Moissette 1988: 192, pl. 31, figs 4-6. — Zágoršek 2001: 554, pl. 19, fig. 4. — Zágoršek 2003: 176, pl. 28, fig. 6.

Fedora excelsa – Waters 1891: 29, pl. 4, fig. 6.

OCCURRENCE. — Eocene: Germany, Austria, Italy, Slovakia, Hungary, Romania, Poland ( Zágoršek 2003). Late Miocene: Algeria ( Moissette 1988).

DESCRIPTION

Small conical, hollow and rather elongated conescharelliniform colonies. Hexagonal zooids arranged in alternating radial series. Smooth convex frontal.

Pear-shaped aperture with a large anter separated by two strong cardelles from a smaller poster. One or two well-developed oval avicularia are generally present on the lateral sides of the zooid. Ovicell not observed.

REMARKS

As noted by several authors (e.g., Zágoršek 2003), the avicularia are more or less developed and may either occur in pairs, or alone, or lack completely. The ovicells have rarely been observed.

Figures

FIG. 11. — A-C, Bryocryptella torquata (Jullien, 1903); A, colony fragment, frontal view, POTB13: AMPG(IV) 2815a; B, colony fragment, dorsal view, POTB13: AMPG(IV) 2815b; C, detail view of zooids, FAN31: AMPG(IV) 3500a; D, Tessaradoma boreale (Busk, 1860), colony fragment, FAN28: AMPG(IV) 3613. E-F, Kionidella excelsa Koschinsky, 1885; E, colony fragment, basal view, FAN7: AMPG(IV)3570a; F, frontal view of a few zooids, FAN16: AMPG(IV) 3572. Scale bars: A, 500 µm; B, E, 200 µm; C, F, 100 µm; D, 1 mm.