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Myrtaciphyllum westdaliense
Taxonomy
Myrtaciphyllum westdaliense was named by Hill and Merrifield (1993) [Holotype, only specimen observed.]. It is considered to be a form taxon. Its type specimen is Holotype: WAM P.84.76, stored in the Western Australian Museum. and is an impression. Its type locality is West Dale, which is in an Eocene/Oligocene channel lag siltstone/sandstone in Australia.
Synonymy list
| Year | Name and author |
|---|---|
| 1993 | Myrtaciphyllum westdaliense Hill and Merrifield p. 318 figs. 10A-D |
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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.
†Myrtaciphyllum westdaliense Hill and Merrifield 1993
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill and H. E. Merrifield 1993 | Only part of the apical half of the leaf known. Secondary veins arise at a relatively oblique angle from the primary vein, and run more or less straight to the intramarginal vein. Secondary veins widely spaced, intersecondary and random reticulate tertiary veins prominent. Leaf surface poorly defined. Stomates are restricted to one leaf surface, randomly arranged. Occasional very large stomates, which may occur over veins, are scattered amongst ordinary stomates. Subsidiary cell arrangement indeterminable, epidermal cell walls sinuous. On non-stomatiferous surface epidermal cell walls highly sinuous. Trichomes absent from both leaf surfaces, although depressions on the non-stomatiferous surface may represent the position of glands. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: base of the Middle Eocene to the top of the Oligocene or 47.80000 to 23.03000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Eocene - Oligocene | Australia (Western Australia) | Myrtaciphyllum westdaliense (type locality: 167545) |