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Glossopteris schopfii
Taxonomy
Glossopteris schopfii was named by Pigg (1990). Its type specimen is G1.21, 435 no. 4a, a leaf, and it is a compression fossil. Its type locality is Skaar Ridge Location, which is in a Capitanian/Changhsingian terrestrial chert/peat in the Buckley Formation of Antarctica.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Glossopteris schopfii Pigg p. 107 figs. Figs.1 3; Plates I-IV |
| 1993 | Glossopteris schopfii Pigg and Taylor p. 504 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Glossopteris schopfii Pigg 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. B. Pigg 1990 | Leaves 1.3-1.8 cm wide (based on complete widths), estimated from partially pre- served fragments up to 3.1 cm in width; largest fragment 6.8 cm long, apex obtuse to retuse; venation composed of prominent midrib up to 1.6 mm wide of 4-5 parallel strands anastomosing only near apex; lateral strands anastomose to form narrow, elongate meshes 3.8 × 0.49 mm; mesh area
1.48 mm2. Veins arch from midrib at angle of 53° and meet margin at angle of around 22°. Vein connections including simple Y-shaped dichotom- ies, 2-, X-, H-, and N-shaped reticulations, and more complex configurations resulting from combinations of these forms. Vein concentration 22.2/cm2; constant from central to marginal re- gions. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Capitanian to the top of the Changhsingian or 264.28000 to 251.90200 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Capitanian - Changhsingian | Antarctica (Queen Alexandra) | Glossopteris schopfii (type locality: 21171) |