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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Thorhallenia
Taxonomy
Thorhallenia was named by Passalia (2007). It is not extant. It is considered to be a form taxon.
It was assigned to Magnoliopsida by Passalia (2007).
It was assigned to Magnoliopsida by Passalia (2007).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2007 | Thorhallenia Passalia |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. G. Passalia 2007 | Simple leaf (or leaflet), microphyll, elliptic to near ovate laminae, sligthly incised with one or two lateral pairs lobes. Base obtuse, convex to concave-convex shape; apex convex, acute to obtuse. Petiole marginal. Margin toothed. Teeth simple to compound with typically convex shape; angular sinus and apparently glandular apex. Each tooth irrigated by one middle main vein and one or two lateral accessories. Venation pinnate craspedodromous to actino/palinactinodromous. Primary vein straight. Secondary order veins (3-4 pairs) opposite to subopposite. Tertiary order venation with a combinated arrangement between alternate percurrent and reticulated. |