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.