Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Laurophyllum acutum

Angiospermae - Laurales - Lauraceae

Taxonomy
Laurophyllum acutum was named by Hill (1986) [Number of specimens: Four. Parataxon NER/020 Hill 1982, p. 67, pl. 6 fig. 44.]. Its type specimen is Holotype: N-0005, 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
YearName and author
1986Laurophyllum acutum Hill p. 334 figs. 2 D, 10 A-F

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomPlantae
phylumSpermatophyta
classAngiospermae
Mesangiosperms
Magnoliid
RankNameAuthor
orderLauralesJussieu 1820
familyLauraceaeJussieu 1789
genusLaurophyllumGöppert 1853
speciesacutum

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 acutum Hill 1986
show all | hide all
Diagnosis
ReferenceDiagnosis
R. S. Hill 1986Lamina. Symmetrical, elliptical. Base obtuse, slightly asymmetrical; apex unknown. Leaf length at least 6.5 cm, width
1.7-2.5 cm. Petiole unknown. Venation. Primary vein slightly curved, stout. Venation pattern brochidodromous. 17-21 secondary veins arise from the primary vein at a uniform angle of 61-69°. Higher order vein arches well formed. Well developed simple and composite intersecondary veins common. Tertiary veins transverse ramified or random reticulate. Lower epidermis. Non-venous cells irregular, with a variable number o f sides and straight or curved walls. Cuticular flange well developed. Venous cells narrower than nonvenous cells. Stomata generally confined to areoles, oriented at random. Larger stomata occur occasionally over veins. Trichome bases with a small, heavily thickened foot cell and radial basal cells occur rarely over veins. Trichomes not preserved. Upper epidermis. As for lower epidermis, except stomates and trichome bases absent, cuticular flange moderately developed, and cells over major veins smaller, narrower, and more regular than non-venous cells.
Measurements
No measurements are available
Diet: "photoautotroph"p
Created: 2011-07-22 00:04:15
Modified: 2011-07-21 09:04:15
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 Eocene55.8 - 37.71Australia (New South Wales) Laurophyllum acutum (type locality: 166623)