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Praemurica
Taxonomy
Praemurica was named by Olsson et al. (1992) [Sepkoski's age data: T Dani T Than]. It was considered unknown by Olsson et al. (1992).
It was assigned to Truncorotaloididae by Olsson et al. (1992); and to Foraminiferida by Sepkoski (2002).
It was assigned to Truncorotaloididae by Olsson et al. (1992); and to Foraminiferida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1992 | Praemurica Olsson et al. |
| 2002 | Praemurica Sepkoski |
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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. †Praemurica Olsson et al. 1992
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†Praemurica inconstans Subbotina 1953
†Praemurica pseudoinconstans Blow 1979
†Praemurica taurica Morozova 1961
†Praemurica uncinata Bolli 1957
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. K. Olsson et al. 1992 | The wall texture of Praemurica (Plate 6: Figures 2-4) is similar to that observed in the modern Neogloboquadrina dutertrei (d'Orbigny) (Plate 5: Figures 9, 10). Elongate subparallel ridges, often with an orientation towards the aperture, are connected by shorter less well-developed ridges that are thicker and broader on one side. This gives the test a cancellate wall texture, which is herein termed praemuricate. It is the first distinctive nonspinose, pustulose wall texture to evolve in the phylogeny of the early Paleocene planktonic foraminifera. [Olsson et al. 1999] |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Kiessling 2004, Loeblich and Tappan 1984 | |||||
Age range: base of the Early/Lower Paleocene to the top of the Middle Paleocene or 66.00000 to 59.24000 Ma
Collections (21 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian - Danian | North Atlantic | P. inconstans, P. uncinata (266342) | |
| Danian | Egypt | P. inconstans (57471 57472 57473 57474 57475 240627) P. uncinata, P. inconstans (240629) | |
| Danian | Argentina (Río Negro) | P. taurica (236539) | |
| Danian | North Atlantic | P. pseudoinconstans (265605 265608) P. pseudoinconstans, P. inconstans (265602) P. taurica, P. pseudoinconstans (265606 265607) | |
| Early/Lower Paleocene | South Pacific | P. pseudoinconstans (250796) P. taurica, P. pseudoinconstans (250797) | |
| Early/Lower Paleocene | Indian Ocean | P. inconstans (248939) | |
| Early/Lower Paleocene - Middle Paleocene | South Pacific | P. taurica (250792) | |
| Paleocene | Indian Ocean | P. inconstans (255527) P. taurica (254284) | |
| Selandian | Tanzania (Lindi) | P. uncinata, P. pseudoinconstans, P. inconstans (179310) |