Lunulites latdorfensis 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 : 548

Lunulites latdorfensis Stoliczka, 1862 ( Fig. 2 B-F)

Lunulites Latdorfensis Stoliczka, 1862: 93 , pl. 3, fig. 7. — Reuss 1867: 232 (not found in the collection).

MATERIAL EXAMINED. — Nine syntypes registered as 1867/0012/0018; five of them belong to Lunulites latdorfensis . A lectotype ( Fig. 2C ; designated here) has been selected from them that corresponds closely with Stoliczka (1862: pl. 3, fig. 7). Ŋe other four specimens belong to different species of Lunulites .

DIAGNOSIS. — Colony small, discoidal, always preserved intact. Autozooecia in very regular concentric rows, about 4-5 per colony. No budding from the fragments observed. Autozooecia roundly rectangular with granular frontal wall. Orifice semicircular. Vibracula small, acutely triangular. Dorsal side comprising sectors as wide as an autozooecium and arranged more or less radially, slightly chaotically curved. Only one row of pores per sector.

REMARKS

Ŋe most characteristic features are:small colonies with very regularly arranged concentric rows of autozooecia, small triangular vibracula and one row of pores per sector.

Figures

FIG. 2. — A, One of the syntypes of Hornera porosa identified as Hornera cf. verrucosa Reuss, 1847 due to the poor preservation and the lack of a gonozooecium;B-F, Lunulites latdorfensis Stoliczka, 1862; B, general view showing typical preservation, the central part sometimes revealing a preserved lithoclast; C, lectotype showing arrangement of autozooecia; D, vibracular zooecia, with triangular shape and distinct condyles; E, autozooecia showing granular cryptocyst and position of the vibracular zooecia; F, abfrontal (reverse) side of colony showing a single row of pores in each basal sector. Scale bars: A-C, F, 1 mm; D, E, 100 μm.