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Laurophyllum squamatum
Taxonomy
Laurophyllum squamatum was named by Hill (1986) [Number of specimens: Three.
Parataxon NER/022 Hill 1982, p. 68, pl. 6 fig. 43.]. Its type specimen is Holotype: N-0066, 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 squamatum Hill p. 337 figs. 2 F, 12 A-F |
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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 squamatum Hill 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill 1986 | Lamina. Symmetrical, ovate or elliptical. Base unknown; apex probably acute, symmetrical. Leaf length at least 7 cm, width 1.2 -- at least 2 cm. Petiole unknown. Venation. Primary vein straight or curved, stout to massive. Venation pattern a mixture of brochidodromous and eucamptodromous. At least 20 secondary veins arise from the primary vein at an average angle of 63°. This angle increases from base to apex. Composite intersecondary veins poorly formed and rare. Tertiary veins weakly percurrent. Lower epidermis. Non-venous cells irregular, with a variable number of sides and straight walls. Cuticular flange Well developed. Venous ceils longer and narrower than nonvenous cells. Stomata confined to areoles, oriented at random. Large, very thin cuticular flaps extend occasionally into the substomatal cavity. Trichome bases with a small, irregularly shaped, heavily thickened foot cell and unmodified basal cells occur rarely over veins. Trichomes bicellular, with a large foot cell and a long, tapering apical cell. Trichomes very thinly cutinised. Upper epidermis. Non-venous cells 6-8 sided,somewhat regular, with straight or curved walls. Cuticular flange extends between epidermal cells and over mesophyll cells. Cells over major veins smaller and more heavily cutinised 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 56.00000 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 squamatum (type locality: 166623) |