Name/Title
Tree FernEntry/Object ID
2024.58.25Description
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Marattiopsida
Order: Marattiales
Family: Psaroniaceae
Genus: Tietea
Species: Tietea singularis
Formation: Pedra do Fogo fmn.
This is a beautiful slice of Permian aged petrified wood from the tree fern, Tietea singularis. The inner wood detail is very fascinating. It comes from the Araguania petrified forest of Brazil and logs that were exported in 2002 from the only legal mining claim in the region. Only the top quality logs were hand selected to be sliced and polished by one of the premier petrified wood polishers in the US. The quality is unmatched with no scuff marks or dull spots. This particular slice is one of one of the top graded ones out of the batch.
From Wikipedia, the free encyclopedia
Tietea singularis
Temporal range: Late Carboniferous–Permian
Pre
Scientific classification
Kingdom: Plantae
Division: Pteridophyta
Class: Marattiopsida
Order: Marattiales
Family: Psaroniaceae
Genus: Tietea
Species: Tietea singularis
Tietea singularis was a Marattialean tree fern from the Late Carboniferous to Permian which grew up to 12 metres (39 ft) in height. It is estimated to represent close to 90% of some fossil assemblages in Brazil.[1][2]
Tietea singularis stems usually are less than 20 centimetres (7.9 in) in diameter, bearing four orthostichies of leaves in a decussate arrangement. The stem is surrounded by a continuous ring of sclerenchyma that separates it from the root mantle.[3] T. singularis stem transverse sections have the same basic structure as Psaronius, but are composed of central vascular bundles having smaller, O- and C-shaped forms, or wavy segments having a short, rounded or fat configuration. Leaf traces are polymeristelic in Tietea, while they are monomeristelic in Psaronius.[4] The Tietea root mantle is composed of polyarch roots embedded in a parenchymatous tissue that is produced both by the stem and the roots.[5]
The preserved examples from Pedra do Fogo Formation, in the Maranhão Basin (northeastern Brazil, near Araguaína) exhibit remarkable cell preservation and exquisite coloration. Much of the recovered wood material from this formation is of the tree ferns Psaronius and T. singularis, with fewer examples of the fossilized stems being of Calamites. Conifers such as Dadoxylon are also found.
Tietea singularis is also seen abundantly in the Motuca Formation, Parnaíba Basin in Filadélfia, Tocantins. In 2000, the área of the Motuca formation was transformed into a Natural monument, the Monumento Natural das Árvores Fossilizadas-MONAF (Tocantins Fossil Trees Natural Monument).Collection
Petrified WoodOther Names
Name Type
Previous Accession/Collection NumberOther Name
Doug Foster Acc.# - F691