Triassic flora from the El Tranquilo Group, Santa Cruz province, Patagonia. Part VI: Ginkgoales.

As part of the systematic study of the flora from Fl Tranquilo Group, the g inkgoal taxa are revised herein. The following species are considered: Gink goites dutoitii Anderson and Anderson, Ginkgoites palmata (Ratte) comb, nov ., Ginkgodium nathorsti Yokoyama, Ginkgodium sp.; Baiera africana Baldoni, Baiera ginkgoides Shirley; Sphenobaiera argentinae (Kurtz) Frenguelli, Sphe nobaiera coronata Anderson and Anderson, Sphenobaiera stormbergensis (Sewar d) Frenguelli, S. sectina Anderson and Anderson, Sphenobaiera sp. cf. S. br owniana Anderson and Anderson, Sphenobaiera sp. cf. S, helvetica Anderson a nd Anderson, Sphenobaiera sp. A, Sphenobaiera sp. B and Sphenobaiera sp. C from the Canadon Large Formation and Ginkgoites waldeckensis (Anderson and Anderson) comb. nov. and Ginkgoites sp. I from the Laguna Colorada Formatio n.