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

Laurophyllum arcuatum

Angiospermae - Laurales - Lauraceae

Taxonomy
Laurophyllum arcuatum was named by Hill (1986) [Number of specimens: 104. Parataxon NER/013 Hill 1982, p. 64, pl. 5 fig. 36.]. Its type specimen is Holotype: N-0018, housed in the Botany Department, University of Tasmania. and 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 arcuatum Hill p. 346 figs. 3 D, 17 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
speciesarcuatum

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 arcuatum Hill 1986
show all | hide all
Diagnosis
ReferenceDiagnosis
R. S. Hill 1986Lamina. Generally symmetrical, ovate to elliptical. Base acute, symmetrical to highly asymmetrical; apex acute, symmetrical. Leaf length 5-16cm, width 1.7-4.9cm. Petiole normal. Venation. Primary vein straight or curved, moderate to stout . Venation pattern eucamptodromous. About 8-11 uniformly curved secondary veins arise from the primary vein at a uniform angle of 37-59°. Poorly formed composite intersecondary veins occur with varying frequency. Tertiary veins random reticulate or weakly percurrent. Lower epidermis. Non-venous cells irregular, with a variable number of sides and straight, curved or sinuous walls. Cuticular flange often irregularly thickened. Venous cells longer and narrower than non-venous cells. Stomata generally confined to areoles, oriented at random. Larger stomata occur occasionally over veins. Secretory cells present. Trichome bases with a small, irregularly shaped, heavily thickened foot cell and unmodified basal cells occur occasionally over veins. Trichomes not preserved. Upper epidermis. Non-venous and venous cells similar to lower epidermis. Cuticular flange heavily thickened, sometimes irregularly so. Trichome bases with a small, irregularly shaped, heavily thickened foot cell and small, heavily thickened basal cells occur occasionally over veins. Trichomes not preserved.