- Tytuł:
- A new species of Todites [Pteridophyta] with in situ spores from the Upper Permian of Pechora Cis-Urals [Russia]
- Autorzy:
- Naugolnykh, S V
- Powiązania:
- https://bibliotekanauki.pl/articles/22721.pdf
- Data publikacji:
- 2002
- Wydawca:
- Polska Akademia Nauk. Instytut Paleobiologii PAN
- Tematy:
-
Pteridophyta
in situ
Todites
Osmundaceae
Upper Permian
Todites lobulatus
fossil
Permian
Russia
new species
Intinskian Formation
spore
Ural Mountains
paleontology
fern - Opis:
- Todites lobulatus sp.nov.is described from the lowermost Upper Permian (Ufimian) of the Pechora basin.The fossil remains preserved as compressions and impressions, were collected from near−shore lake deposits of the Intinskian Formation.The species belongs to protoleptosporangiate ferns (Pteridophyta) of the Osmundaceae, and is characterized by tripinnate fertile fronds with deeply dissected lobate pinnules with round apexes.Sporangia are round or ovoid, free, and located on the abaxial leaf surface.A group of specialized thick−walled cells is located on the top or side part of the sporangia.The species is the most ancient representative of Osmundaceae. Spores of Osmundacidites−type, preserved in situ, are characterized.
- Źródło:
-
Acta Palaeontologica Polonica; 2002, 47, 3
0567-7920 - Pojawia się w:
- Acta Palaeontologica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł