I´m not sure whether this teaniopteroid leaves are effectively Taeniopteris. The biocron is very controversial and the climatic affinities not well established.
Hi, Leppe. I guess they could belong to genus Sueria which are reported from the Lower Cretaceous of Argentina. This genus has Taeniopterid leaf in which many lateral veins bifurcate at their origin. We collected it in the Upper Cretaceous of Magallanes region, as well as in the Upper Cretaceous Quiriquina Formation.
I presume that you are aware that Taeniopteris is not a genus for whole plants, but a fossil-genus (morphogenus in old language) for entire cycadophyte leaves which cannot be safely placed in either the cycads or bennettites. Allister Rees and I tried to sort out this nomenclatural problem some years ago in a paper on the Stinesfield Flora (attached).
Article The Middle Jurassic Flora from Stonesfield, Oxfordshire, UK
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