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Polyptychites trichotomus
Taxonomy
Olcostephanus (Polyptychites) trichotomus was named by Stanton (1895). Its type specimen is USNM 23090 and is a 3D body fossil.
It was recombined as Dichotomites trichotomus by Anderson (1938); it was recombined as Polyptychites trichotomus by Imlay and Jones (1970).
It was recombined as Dichotomites trichotomus by Anderson (1938); it was recombined as Polyptychites trichotomus by Imlay and Jones (1970).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1895 | Olcostephanus (Polyptychites) trichotomus Stanton p. 78 figs. PL XVI, fig. 1 |
| 1938 | Dichotomites trichotomus Anderson p. 159 |
| 1970 | Polyptychites trichotomus Imlay and Jones p. B39 figs. Plate 8, figures 11-14 |
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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 trichotomus Stanton 1895
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Valanginian or 139.80000 to 132.90000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Valanginian | USA (California) | Polyptychites trichotomus (83594) | |
| Valanginian | USA (Oregon) | Polyptychites trichotomus (225877) |