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Plataninium platanoides
Taxonomy
Plataninium platanoides was named by Page (1968). It is considered to be a form taxon. Its type specimen is Stanford University Paleontology Type Collection 9938 and is a 3D body fossil. Its type locality is Black Gulch, which is in a Maastrichtian marine horizon in the Panoche Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Plataninium platanoides Page p. 168 figs. 1-3 |
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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.
†Plataninium platanoides Page 1968
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. M. Page 1968 | Growth rings lacking, diffuse porous, pores solitary, slightly angular, 60-70 ยต in diameter; vessel elements avg 502,u (375-600 ,u) in length; end plates oblique, scalariform with 4-22 bars; intervascular pits opposite, some scalariform particularly in small vessels and in vessel ends; thin-walled tyloses abundant. Parenchyma meta- tracheal-diffuse and in irregular uniseriate bands, some vasicentric; pits to vessels horizontally elongated to almost scalariform. Uniseriate rays scarce, composed of both procumbent and square
or vertical cells up to six cells high. Multiseriates up to 15 or more cells wide and 2 mm or more high; essentially homogeneous but with two or three marginal rows of square cells in some rays, particularly narrow rays; pits to vessels large, opposite to almost scalariform. Fibers make up ground mass of tissue. Pith round, composed of isodiametric cells, surrounded bv numerous bundles of primary xylem separated by broad rays. Bark poorly preserved; only general pattern can be observed. Broad xylem rays extend into secondary phloem and are flanked by radially alternating arcs of what seem to be two kinds of tissue. |
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range: Maastrichtian or 72.10000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian | USA (California) | Plataninium platanoides (type locality: 191731) |