Tietea
| Tietea Temporal range:
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|---|---|
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Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
| Order: | Marattiales |
| Family: | †Psaroniaceae |
| Genus: | †Tietea Solms-Laubach |
| Species[1] | |
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Tietea was a genus of
Late Carboniferous to the Permian. The genus has been placed in a number of families, including Psaroniaceae.[1] The first described species was Tietea singularis, which grew up to 12 metres (39 ft) in height. It is estimated to represent close to 90% of some fossil assemblages in Brazil.[2][3]
Tietea derbyi was described in 1992, but its validity has been questioned as it could be a laterally flattened specimen of T. singularis.
Description
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.[4] 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.[5] The Tietea root mantle is composed of polyarch roots embedded in a parenchymatous tissue that is produced both by the stem and the roots.[6]
Distribution
The preserved examples of Tietea singularis from
Dadoxylon
are also found.
Tietea singularis is also seen abundantly in the
References
Wikimedia Commons has media related to Tietea.
- ^ ISBN 978-3-319-90913-4
- doi:10.1016/S0034-6667(02)00086-6)
{{citation}}: CS1 maint: multiple names: authors list (link - ^ Petrified Wood Museum: The Anatomy of Arborescent Plant Life Through Time
- ^ Herbst, 1986
- ^ Petrified Wood Museum: Tietea vs. Psaronius
- ^ Edith L. Taylor, Thomas N. Taylor, Michael Krings: Paleobotany: The Biology and Evolution of Fossil Plants (2009), page 425
- ^ Dissertation: Study of marattiales in the Tocantins Fossilized Forest
- FAPESP Research Magazine, Edition 210 - August 2013
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