Rhombotrypella sp.

Nakrem, Hans Arne, Błażejowski, Błażej & Gaździcki, Andrzej, 2009, Lower Permian bryozoans from southern and central Spitsbergen, Svalbard, Acta Palaeontologica Polonica 54 (4), pp. 677-698 : 684

Rhombotrypella sp.

Fig. 5J.

Material examined.—Treskelen, sample and one thin section ZPAL Br. 12/Cr. 34.

Remarks.—Only a single oblique cross section of a Rhombotrypella colony was observed being 1.7 mm in diameter with an exozone width of 0.28 mm and an endozone 1.10 mm in diameter. Zooecial apertures may be estimated from the oblique section to be about 0.20 × 0.14 mm. Square zooecial tubes in the endozone number 2–2.5 per 1 mm. These insufficient observations cannot provide a species identification, but the measurements are closest to Rhombotrypella arbuscula ( Eichwald, 1860) known from the Artinskian–Kungurian of Timan−Pechora ( Russia) ( Morozova and Kruchinina 1986) and the Kungurian Vøringen Member (Kapp Starostin Formation) of Spitsbergen ( Nakrem 1995).