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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Araucaria uncinatus
Taxonomy
Araucaria uncinatus was named by Hill (1990). It is not extant. It is considered to be a form taxon. Its type specimen is M-669, a cuticle.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1990 | Araucaria uncinatus Hill p. 218 figs. 26-30 |
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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.
†Araucaria uncinatus Hill 1990
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill 1990 | Leaf arrangement on axis unknown. Leaf 5 mm long, 2 mm wide, distinctly keeled, apex acute, incurving, hooked, adaxial surface concave. Stomatal distribution unknown. Stomatal plug structure unknown. Subsidiary cells usually four, sometimes five or six. Guard cells level with the hypodermis. Cuticle on subsidiary cells granular, outer flange oval, regular, rim unthickened. Flange between guard and subsidiary cells an irregular fringe, absent from guard cell poles. Polar extensions absent. Flange between guard cells smooth and thin. Cuticle on guard cell surface smooth or slightly granular. Epidermal cell walls sometimes sinuous, buttressing prominent. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Late/Upper Oligocene to the top of the Early/Lower Miocene or 27.30000 to 15.98000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oligocene - Early/Lower Miocene | Australia (Tasmania) | Araucaria uncinatus (167314) |