Adeonella ornatissima ( Stoliczka, 1862 )

Zágoršek, Kamil & Gordon, Dennis P., 2014, Revision of the Oligocene bryozoan taxa described by Stoliczka (1862), with the description of a new genus of Bryocryptellidae, Geodiversitas 36 (4), pp. 541-564 : 550

Adeonella ornatissima ( Stoliczka, 1862) ( Fig. 3 B-D)

Eschara (Escharifora) ornatissima Stoliczka, 1862: 86 , pl. 2, fig. 7.

Adeonella ornatissima – Zágoršek 2003: 152, pl. 19, fig. 2 (cum syn.).

MATERIAL EXAMINED. — Two syntypes registered as 2010/0259/0010. Ŋe chosen lectotype (designated here) corresponds with Stoliczka’s illustration (1862: pl. 2, fig. 7) and is depicted in Figure 3D herein.

DIAGNOSIS. — Colony erect, flat, multiserial, bifurcating, with 8-10 longitudinal rows of autozooecia. Autozooecia at colony margin can be more than twice as long as those in colony centre. Frontal shield without granulations, knobbly, perforated by marginal areolar pores; lateral tubercles sometimes developing when secondary calcification occurs; frontal area relatively narrow in zooecia located in middle part of colony. Orifice oval to suborbicular with broad poster. Lateral-oral pair of avicularia small, circular, often fusing as bridge across aperture in older parts of colony. Secondary calcification often expressed as well-developed tubercles situated usually in corners of zooecia.

REMARKS

Adeonella ornatissima differs from Adeonella mortisaga ( Stoliczka, 1862) , n. comb. in having shorter autozooecia with a knobbly frontal shield and oral avicularia that may fuse across the aperture.

Figures

FIG. 3. — A, Lectotype of Eschara reussi identified as Steginoporella cf. reingruberhohensis Zágoršek, 2003 showing large avicularia (top and lower right) and elevated distal zooecial rims; B-D, Adeonella ornatissima (Stoliczka,1862); B, general view of lectotype with autozooecia and maternal zooecia; C, maternal zooecia showing the characteristic semilunar aperture and autozooecia with a deep narrow sinus; D, lectotype designated here as older stage of colony development showing secondary calcification producing a transverse apertural bar; E, F, Adeonella mortisaga (Stoliczka, 1862), n. comb.; E, general view of lectotype showing autozooecia with two suboral avicularia and large maternal zooecia; F, maternal zooecium with very large aperture (partly broken) and autozooecia with a narrow sinus. Scale bars: A, B, D, E, 1 mm; C, F, 100 μm.