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Dacrycarpus latrobensis
Taxonomy
Dacrycarpus latrobensis was named by Hill and Carpenter (1991) [Type locality: Yallourn, Victoria.
Specimens examined: P 15713-15715 (Yallourn), P 15716 (Bacchus Marsh).]. It is considered to be a form taxon. Its type specimen is Holotype: P 15714, housed in the Museum of Victoria, Melbourne., a sterile axis (Cuticle), and it is a compression fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1991 | Dacrycarpus latrobensis Hill and Carpenter p. 466 figs. 7-9 |
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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.
†Dacrycarpus latrobensis Hill and Carpenter 1991
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. S. Hill and R. J. Carpenter 1991 | Foliage dimorphic; distichous leaves bilateral, straight or somewhat falcate, decurrent, strongly keeled with a single vein. Leaf length:width ratio 2.5:1-5:1. Short shoot about 2 cm long x 5 mm wide. Bifacial leaves small, awl-shaped, with a weakly developed marginal frill on the apical part, spirally arranged, amphistomatic, stomates confined to two more or less continuous bands on each surface, those on the adaxial surface being narrower and sometimes shorter than those on the abaxial surface. Bilateral leaves amphistomatic, two longitudinal bands of stomates occurring from leaf base to apex on each surface. Stomates less frequent on one leaf surface, stomates often occluded with cuticle on that surface. Cuticle on lateral subsidiary cells smooth, more granular on polar subsidiary cells. Flange between guard and subsidiary cells well developed, thin, entire-margined. Polar extensions rudimentary or absent. Flange between guard cells slightly thickened, no polar extension. |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Late/Upper Oligocene to the top of the Oligocene or 28.40000 to 23.03000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Oligocene | Australia (Victoria) | Dacrycarpus latrobensis (167352) | |
| Early/Lower Oligocene - Early/Lower Miocene | Australia (Victoria) | Dacrycarpus latrobensis (169007 169237) | |
| Late/Upper Oligocene - Miocene | Australia (Victoria) | Dacrycarpus latrobensis (167351) |