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Portatrochammina
Taxonomy
Portatrochammina was named by Echols (1971). It was considered unknown by Echols (1971).
It was assigned to Foraminifera by Echols (1971).
It was assigned to Foraminifera by Echols (1971).
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Portatrochammina Echols pp. 145-148 |
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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.
G. †Portatrochammina Echols 1971
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. J. Echols 1971 | Test free, trochospiral, expanding gradually; wall agglutinated; proloculus tectinous; dorsal side flat to moderately convex; ventral side convex; umbilicus covered by a series of overlapping flaps, one flap derived from each chamber; umbilical flap distinguished from the chamber by flatter contour and often by finer agglutination; flap of final chamber usually completely covering umbilicus concealing flap of penultimate chamber; aperture a low interio-marginal arch in the last septal face, continuing as a slit around the entire free edge of the flap. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Collections
No collection or age range data are available