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Thomasostrobus longus
Thomasostrobus longus Opluštil, Bek, Drábková Bull. Geosci., 84(2): 286. 30 Jun 2009
- Name
- Thomasostrobus longus
- Rank
- Species
- Generic Name
- [Genus] Thomasostrobus
- Authors (Pub.)
- Opluštil S.
Bek J.
Drábková J.
- Publication
- A new bisporangiate lycopsid cone genus Thomasostrobus gen. nov. from the Late Pennsylvanian of the Intra-Sudetic Basin (Czech Republic) [2009/6]
- Journal
- Bulletin of Geosciences
- Volume
- 84
- Issue
- 2
- Page number
- 286
- Year
- 2009
- Fossil Status
- cones
- Stratigraphy
- Kasimovian
- Strat. comment
- Stephanian B
- Location
- Kateřina (formerly Stachanov) Mine, Radvanice
near Trutnov, Hradec Králové Region, Czech Republic
- Paleoregion
- Laurussia (Perunica)
Data for Holotypus
- Repository
- Czech Geological Survey, Prague, Czech Republic
- Repository Number
- Cone indicated as “H” on specimen ZŠ 307a, b
(part and counterpart)
- Diagnosis
- Bisporangiate cylindrical strobili, more than
230 mm long, 18–20 mm wide without distal laminae and
24–26 mm wide including them, with lower megasporangiate
and upper microsporangiate parts. Axis 4 mm in diameter.
Pedicels triangular, 6–7 mm long, in low spirals perpendicular
to the cone axis, distal laminae triangular with
straight entire margins, 17–22 mm long and 3 mm wide at
the base. Sporangia oval, about 5.5–6.5 mm long and 2 mm
wide. Trilete circular to subcircular microspores. Exine of
both surfaces laevigate. Rays of trilete mark with prominent
labrum. Circular tectate megaspores with subgula. Triradiate
ridges and part of the contact area are elevated near the apex
and create a regular pyramidal triangular subgula. The sculpture
of the three-layered exine is laevigate and punctate.
