Mecynoecia cf. pulchella ( Reuss, 1847 )

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 : 544

Mecynoecia cf. pulchella ( Reuss, 1847) ( Fig. 1E )

Cricopora pulchella Reuss, 1847: 40 , pl. 6, fig. 10. Pustulopora (Clausa) retifera Stoliczka,1862:78 , pl.1, fig.2. Mecynoecia pulchella – Zágoršek 2010: 32, pl. 17, figs 1-8 (cum syn.).

MATERIAL EXAMINED. — Two colonies of Pustulopora (Clausa) retifera , both lacking a gonozooecium, are registered as 1862/0022/0047. Owing to taxonomic uncertainty, no lectotype of Stoliczka’s species has been selected.

DIAGNOSIS. — Colonies branches broken into a short length, with 12-14 autozooecial tubes arranged around branch axis. Tubes narrow, short, with circular to oval aperture. Apertures are very densely arranged,situated on short peristomes.Frontal walls short, slightly convex, smooth, sparsely perforated by small pseudopores. Gonozooecium lacking.

REMARKS

Ŋe arrangement of zooecia very closely resembles that in Mecynoecia pulchella , which is very common in tertiary sediments of Paratethys (see Zágoršek 2010). Insofar as gonozooecia are lacking in any of the Stoliczka specimens, the identification is not certain.

Figures

FIG. 1. — A, Exidmonea hoernesi (Stoliczka, 1862), general view of holotype showing diagnostic features: one aperture, close to the dorsal side of the colony, which is always arranged outside the fascicle; B, Exidmonea giebeli (Stoliczka, 1862), general view of holotype; C, D, holotype of Filisparsa tenella identified as Filisparsa? sp. due to the poor preservation and lack of the gonozooecium; E, one of the syntypes of Pustulopora (Clausa) retifera identified as Mecynoecia cf. pulchella (Reuss, 1847) owing to the lack of a gonozooecium; F, holotype of Pustulopora attenuate identified as Mecynoecia cf. proboscidea (Milne-Edwards, 1838) owing to the lack of a gonozooecium; G, H, syntype of Alveolaria Buski identified as?Bobiesipora fasciculata (Reuss, 1848); J, holotype of Heteropora similis Stoliczka, 1862, identified as nomen dubium due to the very poor preservation and the absence of a gonozooecium or any other characteristic features; K, L, holotype of Pavotubigera anhaltina identified as “Disporella anhaltina (Stoliczka, 1862)” nomen dubium owing to poor preservation and the absence of a gonozooecium. Scale bars: A-G, 1 mm; H-L, 100 μm.