Fistuliphragma BASSLER, 1934

Ernst, Andrej, Tolokonnikova, Zoya & Yarahmadzahi, Hamed, 2012, Upper Devonian (Frasnian) Bryozoa from the Shishtu 1 Formation of Niaz area (eastern Tabas, central Iran), Revue de Paléobiologie 31 (1), pp. 1-14 : 3-4

Genus Fistuliphragma BASSLER, 1934

Fistulipora ROMINGER, 1866 , 121.

Fistuliphragma BASSLER, 1934 , 407; UTGAARD, 1984, 395; YANG & LU, 1983, 270-271; ERNST, 2008 a, 326.

Type species: Fistulipora spinulifera ROMINGER, 1866. Traverse Group (Middle Devonian); Michigan, USA .

Diagnosis: Solid ramose and encrusting colonies, usually in form of hollow tubes. Secondary overgrowth occurring. Autozooecia growing from a thin epitheca, bending sharply at their bases towards colony surface, with circular apertures and large, prominent lunaria. Hemiphragms present, positioned in alternating pattern in autozooecia, originating in laminated skeleton of autozooecia, rare in endozones, rare to abundant in exozones. Basal diaphragms rare to abundant. Vesicular skeleton well-developed. In the centre of each vesicle roof a single acanthostyle present. Monticules present.

Remarks: Fistuliphragma BASSLER, 1934 is similar to Cliotrypa ULRICH & BASSLER in BASSLER, 1929 and Strotopora ULRICH in MILLER, 1889 in the presence of hemiphragms, but differs from both genera in the absence of gonozooecia.

Stratigraphic and geographic range: Middle Devonian of USA, Germany, Western Sahara and Upper Carboniferous of China.