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Osangularia
Taxonomy
Osangularia was named by Brotzen (1940) [Sepkoski's age data: K Albi-m R]. It is extant. It was considered unknown by Brotzen (1940).
It was assigned to Alabaminidae by Brotzen (1940); and to Foraminiferida by Sepkoski (2002).
It was assigned to Alabaminidae by Brotzen (1940); and to Foraminiferida by Sepkoski (2002).
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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. Osangularia Brotzen 1940
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| F. Brotzen 1940 | shell more or less lenticular, symmetrical, or one or the other side somewhat more strongly curved. Ran always sharpened or winged. Spiral side having several rapidly growing turns. The navel side shows only the last handling; often formed umbilical disc. The mouth consists of an angled hole (os angularis), one leg of which lies along the inner edge of the last chamber. The second runs more or less diagonally across the face of the last chamber. Often both legs are separated so that there are two mouths.
Stands between Eponides and Epistomina. Often in the Upper Cretaceous and in the older tertiary. The name Pulvinulinella should only be limited to forms corresponding to the genotype P. subperiviana. Spiral and umbilical side equally strongly arched. Spiral side with a particularly high centre and flat edge. The umbilical side is poorly structured, with an indistinct umbilical button or only a strongly raised centre. The edge was pulled out, particularly clearly marked from the navel side. Chambers indistinctly limited. Mouth surface steep; Mouth always in two parts. (Translated). |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Albian to the top of the Priabonian or 113.00000 to 33.90000 Ma
Collections (57 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Albian | France (Provence) | O. brotzeni (56821 56823) | |
| Late/Upper Cenomanian | Egypt | O. texana, O. sp., O. exparsa (141572) | |
| Late/Upper Campanian | Poland (Lubelskie) | O. peracuta, O. navarroana (182633) | |
| Maastrichtian | Tunisia | O. cordieriana (57320 57321 57322 57323 57324 57325 57326 57327 57328 57329 57330 57331 57332 57333 57334 57335 57336 57337 57338 57339 57340 57341 57342 57343 57344 57345 57346 57347 57348 57349 57350 57351 57353 57354 57355 57356 57357 57358 57359 57360 57361 57362 57363 57364 57365 57367 57368) | |
| Thanetian | Spain | O. velascoensis (154089) | |
| Ypresian | United Kingdom (England) | O. sp. (8025) | |
| Ypresian | Spain | O. velascoensis (154096) O. velascoensis, O. plummerae (154090) | |
| Early/Lower Eocene | Canada (Nova Scotia) | O. sp. (141909) | |
| Priabonian | Tonga | O. bengalensis (43006) |