Gimnospermous woods from Llantenes Formation (Upper Triassic), Mendoza Province, Argentina
DOI:
https://doi.org/10.4013/4690Abstract
Silicified wood found close to the “dark shales” levels, from the Upper Triassic Llantenes Formation, close to Malargue, southern Mendoza province, Argentina, are described. They are: Agathoxylon dallonii (Boureau) Crisafulli and Herbst nov. comb., Prototaxoxylon intertrappeum Prakash and Srivastava, Podocarpoxylon tikiense Ram-Awata & Rajanikanth and Baieroxylon chilensis Torres and Philippe. The taxa recorded are common with- and frecuently found in different Gondwana sequences, at least one Triassic and two Liassic Formations of Argentina, Triassic and Liassic from Chile, the Tiki Formation of India and Triassic of northern Africa. The anatomic characters reflecting paleoclimatic conditions of these woods are analized; they show a mesoxerofitic association that partially shares the conditions proposed by Giraud for other gondwanic wood associations with the same families/orders here recorded.
Key words: gimnosperms, woods, Upper Triassic, Mendoza, Argentina.Downloads
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