Nandania Wang, 1989

Olempska, Ewa, 2002, The Late Devonian Upper Kellwasser Event and entomozoacean ostracods in the Holy Cross Mountains, Poland, Acta Palaeontologica Polonica 47 (2), pp. 247-266 : 262

Genus Nandania Wang, 1989

Nandania asymmetrica ( Koch, 1967) .—Thisspecies(Fig.9A, B) occurs in the Płucki section in the pre−event interval (samplesP−19,P−20,andP−112toP−124).Thelateraloutlineofthis species is elongate oval. The posterior and anterior ends are broadly rounded and the dorsal and ventral margins are gently curved.Thesulcusisalmostabsent,andtheshallowmusclepit is only occasionally developed. The longitudinal depression runs in mid−height from the muscle pit towards the posterior margin. The surface bears 30–40 longitudinal ribs. Between four and five ribs run parallel to the posterior end and three to four run parallel to the anterior end. Cross ribs are often developed. This species is very similar to Nandania pseudophtalma from the Frasnian of Germany ( Rabien 1954), Spain ( Gozalo 1994), Belgium ( Casier1975),andChina(Wang1989),butdiffers in the absence of the sulcus.

Range and occurrences.—Originally this species was described from the Famennian (Nehden−Stufe) of Sauerland, Germany ( Koch1967).ItoccursalsointheearlyFamennian ofGreatBritain( Gooday1978),butitisalsoknownfromthe late Frasnian and early Famennian of South China (Wang 1989).