Cladophlebis, Brongniart, 1849

Halamski, Adam T., Kvaček, Jiří, Svobodová, Marcela, Durska, Ewa & Heřmanová, Zuzana, 2020, Late Cretaceous mega-, meso-, and microfloras from Lower Silesia, Acta Palaeontologica Polonica 65 (4), pp. 811-878 : 822

Cladophlebis ? sp. 2

Fig. 4A .

Material.—Żeliszów, Assemblage 5, upper Coniacian?–lower Santonian?: MGUWr 7556p.

Description.—The available pinna fragment consists of two nearly oppositely arranged pinnules. Each pinnule is lanceolate in shape, ca. 8 mm long and 2–3 mm wide, with broad slightly decurrent base and acute apex. Venation obscured by carbonaceous matter.

Remarks.— Cladophlebis ? sp. 2 differs from Cladophlebis sp. 1 in having acute apices of pinnulae, decurrent bases, and suboppositely arranged pinnulae. The fragmentary character of the studied material precludes any detailed comparison like in the case of Cladophlebis sp. 1 . Similarities with fronds of “ Sphenopteris ” dubia ( Velenovský, 1888) Kvaček and Halamski in Halamski and Kvaček, 2016, and Anemia fremontii Knowlton, 1917 , can be noted, but in Clad op hlebis? sp. 2 pinnulae arrangement on the rachis is subopposite.

Figures

Fig. 4. Late Coniacian?–early Santonian? ferns from the North Sudetic Basin, Lower Silesia, Poland. A. Cladophlebis? sp. 2, fragment of a pinna MGUWr 7556p, Żeliszów, Assemblage 5. B. Cladophlebis sp. 1, fragment of a pinna MB.Pb.2018/0067, Rakowice Małe, Assemblage 5. C. Coniopteris? sp., frag- ment of a pinna MB.Pb.2018/0006 (rachis arrowed), Rakowice Małe,Assemblage 5. D–G. Konijnenburgia cf. galleyi (Miner, 1935) Kvaček and Dašková, 2010, Assemblage 4. D. Fragment of a pinna MB.Pb.2018/0062, Rakowice Małe. E. Accumulation of isolated pinnules MB.Pb.2008/373.2a (E1) and enlargement of a pinnule with sori (E2), Żerkowice. F. Two isolated pinnules MB.Pb.2008/373.1 (F1) and enlargement of the longest pinnule in the studied material with sori (F2), Żerkowice. G. Fragment of a pinna MB.Pb.2008/373.2b, Żerkowice.