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Achradosporis lurensis
Taxonomy
Achradosporis lurensis was named by Ruiz and Quattrocchio (1997). It is not extant. It is considered to be a form taxon. Its type specimen is Holotype: A 2972/8: 8.7/147.2; Laboratorio de Palinología Universidad Nacional del Sur., a microspore (Pollen grain). Its type locality is Pozo Puerto Belgrano N° 20 sample 397, which is in a Danian terrestrial siltstone in the Pedro Luro Formation of Argentina.
Synonymy list
| Year | Name and author |
|---|---|
| 1997 | Achradosporis lurensis Ruiz and Quattrocchio p. 23 figs. Lám. B, figs. 4-9 |
| 1999 | Achradosporis lurensis Quattrocchio and Ruiz p. 38 |
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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.
†Achradosporis lurensis Ruiz and Quattrocchio 1997
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. C. Ruiz and M. E. Quattrocchio 1997 | Trilete microspore, cavate. Amb subcircular to subtriangular. Laesura extending approximately 3/4 of the spore radius, reaching the equatorial margin of the inner body, with a margo 0.5 to 2 µm thick. Inner body of the spore ovoid in shape, proximally attached, slightly offset from the polar axis, which results in a non-uniform cavity between the nexine and sexine. Width of the cavity in the equatorial area: 1 to 8 µm. Exine two-layered; nexine smooth (approximately 0.8 µm thick), forming an inner body proximally attached to the sexine; sexine thick, with irregular thickness ranging from 2 to 5 µm, distally separated from the nexine. Proximal surface scabrate, and the sculpture becomes slightly denser toward the subequatorial area. Distal surface of the sexine densely covered with granules and, in some cases, verrucae up to 1 µm in diameter, along with occasional conical spines up to 0.8 µm in height. |
Measurements
No measurements are available
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| Source: superp = superphylum | |||||
| Reference: Kenrick and Crane 1997 | |||||