Anarthropora macropora ( Stoliczka, 1862 ), 2014

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 : 554

Anarthropora macropora ( Stoliczka, 1862) n. comb.

( Fig. 6 A-D)

Lepralia macropora Stoliczka, 1862: 84 , pl. 2, fig. 3.

Adeona sp. n. – Nehyba et al. 2008: 55, table 3.

MATERIAL EXAMINED. — Ŋree syntypes, registered as 1859/0026/0140. Ŋe selected lectotype (designated here) corresponds with Stoliczka’s illustration (1862: pl. 2, fig. 3) and is depicted as Figure 6A herein.

DIAGNOSIS. — Colony encrusting, autozooecia suboval, arranged in irregular longitudinal rows. Frontal shield coarsely perforated by 8-12 large excavations, each bowl-shaped with a broad smooth rim and the sides sloping to a smaller hole edged with several blunt denticles, these conferring a stellate appearance to each foramen. Peristomial aperture subcircular to transversely oval, with low rim; deeper interior proximal margin of aperture straight with tiny separated denticles along its edge. No oral spines. Small avicularian chamber on mid-distal rim of peristome; a larger avicularium situated suborally at one corner of the aperture, the rostrum long, acute, directed laterally, no crossbar or pivots. No ooecia observed.

REMARKS

Recent Anarthropora monodon Busk, 1860 ( type species) differs in having a much more densely foraminate frontal shield and smaller peristomial avicularia.

Figures

FIG. 6. – A-D, Anarthropora macropora (Stoliczka, 1862), n. comb.; A, general view of lectotype; B, autozooecium showing frontal foramina and suboral avicularium; C, syntype showing quincuncial arrangement of autozooecia; D, frontal-shield foramen showing well-preserved radial denticulation;E, F, Escharella grotriani (Stoliczka,1862);E, lectotype showing arrangement of autozooecia; F, zooecium with ooecium and oral spines; G, H, Myriapora? beyrichi (Stoliczka, 1862), n. comb.; G, lectotype showing smooth outlines of autozooecia; H, detail of aperture with condyles typical of myriaporids; I, J, syntype of Eschara porulosa identified as Tubucella mammillaris (Milne Edwards, 1836); I, general view of chosen lectotype of synonymous Eschara porulosa Stoliczka, 1862; J, lateral view of colony showing autozooecia with large apertures. Scale bars: 100 μm.