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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Olcostephanus (Viluceras)
Taxonomy
Olcostephanus (Viluceras) was named by Aguirre-Urreta and Rawson (1999). Its type is Simbirskites permolestus.
It was assigned to Olcostephanus by Aguirre-Urreta and Rawson (1999) and Mourgues et al. (2015).
It was assigned to Olcostephanus by Aguirre-Urreta and Rawson (1999) and Mourgues et al. (2015).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1999 | Olcostephanus (Viluceras) Aguirre-Urreta and Rawson p. 351 |
| 2015 | Olcostephanus (Viluceras) Mourgues et al. p. 227 |
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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.
Subg. †Olcostephanus (Viluceras) Aguirre-Urreta and Rawson 1999
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†Olcostephanus (Viluceras) araucanus Leanza 1958
†Olcostephanus (Viluceras) duraznoensis Aguirre-Urreta and Rawson 1999
†Olcostephanus (Viluceras) permolestus Leanza 1958
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 14 | 17.9 | 12.0 | 24.0 | 18.0 | 3.19 | |
| shell diameter | 14 | 50.4 | 34.0 | 76.0 | 48.5 | 11.7 | |
| shell inflation | 14 | 19.5 | 12.0 | 32.0 | 19.5 | 5.86 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Valanginian to the top of the Late/Upper Valanginian or 139.80000 to 136.40000 Ma
Collections (27 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Valanginian | Argentina | Olcostephanus permolestus (37761 37779 37780 37781 37782 37783 37784 37785) Olcostephanus permolestus, Olcostephanus araucanus (37763) Olcostephanus permolestus, Olcostephanus duraznoensis (157546) Olcostephanus sp. (37758 37759 37760 37762 37765 37767 37787) | |
| Late/Upper Valanginian | Argentina (Neuquen) | Olcostephanus duraznoensis (37778) | |
| Late/Upper Valanginian | Chile | Olcostephanus permolestus (67494) | |
| Late/Upper Valanginian | Chile (Copiapó) | Olcostephanus permolestus (223057) | |
| Valanginian | Argentina | Olcostephanus duraznoensis (37752 37753 37754) Olcostephanus permolestus (37333 37741 37742 37743) |