A NEW GENUS OF GLOSSOPTERID FRUCTIFICATIONS FROM THE ARTINSKIAN TO CHANGHSINGIAN OF EASTERN AUSTRALIA
Keywords:
Glossopteridales, new genus, reproductive organ, Permian, Sydney Basin, Bowen BasinAbstract
A new genus, Karingbalia is established to accommodate certain eastern Australian glossopterid fertile organs previously assigned to Ottokaria Zeiller emend. Pant et Nautiyal. Karingbalia differs from Ottokaria mainly by the sub-parallel rather than perpendicular orientation of basal peripheral lobes with respect to the receptacle margin. Moreover, Karingbalia ranges from the Artinskian to Changhsingian, whereas Ottokaria sensu stricto is probably confined to the Cisuralian. Two Karingbalia species are recognized: K. inglisensis McLoughlin comb. nov. from the Lopingian of the Bowen and Sydney basins; and K. nychumensis sp. nov. from Artinskian–lower Kungurian strata on the Georgetown Inlier. Several additional species of Ottokaria from across Gondwana do not conform precisely to the diagnosis of that genus and their taxonomic reappraisal is proposed. Resumen. Un nuevo género, Karingbalia, se establece para incluir órganos reproductivos de Glossopteridales, previamente asignados a Ottokaria Zeiller emend. Pant et Nautiyal. Karingbalia se diferencia de Ottokaria principalmente por la orientación sub paralela en lugar de perpendicular de los lóbulos periféricos, respecto a las márgenes del receptáculo. Adicionalmente, Karingbalia posee un rango que vas desde el Artinskiano al Changhsingiano, mientras que Ottokaria sensu stricto puede ser restringido al Cisuraliano. Dos especies son reconocidas para Karingbalia: K. inglisensis McLoughlin comb. nov. del Lopingiano de las cuencas de Bowen y Sidney; y K. nychumensis sp. nov. de los estratos del Artinskiano–Kunguriano temprano de Georgetown Inlier. Numerosas especies adicionales de Ottokaria provenientes de Gondwana no concuerdan en forma precisa con la diagnosis del género, y justifican su reevaluación taxonómica.Downloads
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