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Laurophyllum sinuatum
Taxonomy
Laurophyllum sinuatum was named by Hill (1986) [Number of specimens: One.
Parataxon NER/015 Hill 1982, p. 65, pl. 2 fig. 17.]. Its type specimen is Holotype: N-0073, housed in the Botany Department, University of Tasmania., a leaf (Cuticles), and it is a compression fossil. Its type locality is Nerriga Flora, which is in an Eocene/Eocene fluvial-lacustrine siltstone/mudstone in Australia.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Laurophyllum sinuatum Hill p. 343 figs. 3 B, 15 A-E |
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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.
†Laurophyllum sinuatum Hill 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill 1986 | Lamina. Symmetrical, elliptical. Base and apex acute, highly asymmetrical. Leaf length 6.5 cm, width l cm. Petiole slightly winged. Venation. Primary vein curved, massive. Venation pattern eucamptodromous. About 12 secondary veins arise from the primary vein at a uniform angle of 58°. Secondary veins curve sharply inward near the margin and in the basal half of the leaf merge into an intramarginal vein. Poorly formed composite intersecondary veins common. Tertiary veins weakly percurrent. Lower epidermis. Non-venous cells irregular, with a variable number of sides and sinuous walls. Cuticular flange thickened with a series of ridges. Venous cells longer and narrower than non-venous cells. Stomata confined to areoles, oriented at random. Trichome bases with a small, circular, thickened foot cell and unmodified basal cells occur rarely over veins. Trichomes not preserved. Upper epidermis. As for lower epidermis except stomates and trichome bases absent
and cells over larger veins more regular than non-venous cells. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: base of the Early/Lower Eocene to the top of the Middle Eocene or 55.80000 to 37.71000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Eocene - Middle Eocene | Australia (New South Wales) | Laurophyllum sinuatum (type locality: 166623) |