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Polyptychites (Primitiviptychites) rectangulatus
Taxonomy
Olcostephanus rectangulatus was named by Bogoslowsky (1902) [DISTRIBUTION: Valanginian; Greenland, Siberia.]. It is not a trace fossil.
It was recombined as Siberites rectangulatus by Bogomolov (1989); it was recombined as Polyptychites (Primitiviptychites) rectangulatus by Alsen (2006).
It was recombined as Siberites rectangulatus by Bogomolov (1989); it was recombined as Polyptychites (Primitiviptychites) rectangulatus by Alsen (2006).
Sister species lacking formal opinion data
Synonymy list
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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.
†Polyptychites (Primitiviptychites) rectangulatus Bogoslowsky 1902
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Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 7 | 16.9 | 14.0 | 19.0 | 17.0 | 1.83 | |
shell diameter | 7 | 42.4 | 36.0 | 49.0 | 44.0 | 5.59 | |
shell inflation | 7 | 11.4 | 9.00 | 15.0 | 11.0 | 2.29 |
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Source: o = order, c = class | |||||
References: Kiessling 2004, Kiessling 2003 |
Age range: base of the Valanginian to the top of the Late/Upper Valanginian or 139.80000 to 136.40000 Ma
Collections (12 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Early/Lower Valanginian | Russian Federation | Siberites rectangulatus (189638 189642 189655 189656 189658 189661) | |
Early/Lower Valanginian | Greenland | Polyptychites rectangulatus (83684 83706 83742) | |
Late/Upper Valanginian | Greenland | Polyptychites rectangulatus (83717) | |
Valanginian | Greenland | Polyptychites rectangulatus (83741) | |
Valanginian | Russian Federation | Polyptychites rectangulatus (65458) |