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- Title
Mixoxylon australe gen. et sp. nov., a unique homoxylous wood with non-angiosperm affinity from the Lower Cretaceous of Antarctica (Albian, James Ross Island).
- Authors
Chernomorets, Oleksandra; Sakala, Jakub
- Abstract
A unique homoxylous wood is described from the Albian Lewis Hill Member of the Whisky Bay Formation on James Ross Island as Mixoxylon australe Chernomorets & Sakala, gen. et sp. nov. This fossil taxon shows an unusual combination of features in having indistinct growth rings with a significantly wider earlywood zone than latewood zone, tracheids with scalariform to araucarian pitting, exclusively uniseriate rays with distinctly pitted both tangential and horizontal walls and araucarioid to podocarpoid cross-field pits. Its characteristics are intermediate between Phoroxylon Sze and Sahnioxylon Bose & Sah, so a new genus is proposed. Its systematic affinities are dubious, but it represents the southernmost evidence of the homoxylous Mesozoic wood with scalariform pitting described so far.
- Subjects
ANTARCTICA; WOOD; MESOZOIC Era; ISLANDS; TRACHEARY cells; WHISKEY
- Publication
Antarctic Science, 2021, Vol 33, Issue 5, p493
- ISSN
0954-1020
- Publication type
Article
- DOI
10.1017/S0954102021000389