Clathraria BRONGNIART

Cleal, Christopher J. & Thomas, Barry A., 2018, Nomenclatural Status Of The Palaeobotanical “ Artificial Taxa ” Established In Brongniart’S 1822 “ Classification ” Paper, Fossil Imprint 74 (1 - 2), pp. 9-28 : 14-15

Clathraria BRONGNIART

Text-fig. 1d

1822a Clathraria BRONGNIART , p. 209.

Ty p e. Clathraria brardii BRONGNIART, 1822a, p. 222 , pl. 1, fig. 5; Loc.: Upper Pennsylvanian Series, Lardin- Saint-Lazare, near Terrasson, Départment de la Dordogne, France (vide Brongniart 1837b: 431); ≡ Sigillaria brardii (BRONGNIART) BRONGNIART, 1828a .

D i a g n o s i s. “Tiges ni cannelées, non articululées, impressions en forme de disques arrondis disposées en quinconce.”

D i s c u s s i o n. This generic name was used by Brongniart (1822a) for stem fossils similar to Sigillaria but with no rib between the longitudinal rows of leaf cushions. Most authors now assign both types of stem to Sigillaria ,

although Crookall (1966) argued that they could be used to distinguish sections within the genus.