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Tollia mutabilis
Taxonomy
Olcostephanus (Simbirskites) mutabilis was named by Stanton (1895) [DISTRIBUTION: Valanginian; Pacific Coast North America.]. Its type specimen is USNM 23089, a shell, and it is a 3D body fossil.
It was recombined as Dichotomites mutabilis by Anderson (1938); it was recombined as Homolsomites mutabilis by Imlay (1956) and Imlay (1960); it was recombined as Tollia mutabilis by Imlay and Jones (1970).
It was recombined as Dichotomites mutabilis by Anderson (1938); it was recombined as Homolsomites mutabilis by Imlay (1956) and Imlay (1960); it was recombined as Tollia mutabilis by Imlay and Jones (1970).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1895 | Olcostephanus (Simbirskites) mutabilis Stanton p. 77 figs. PI. XV, figs. 1-5 |
| 1938 | Dichotomites gregerseni Anderson pp. 158 - 159 figs. Plate 28, figures 3, 4 |
| 1938 | Dichotomites tehamaensis Anderson p. 158 figs. Plate 28, figure 2; plate 30, figure 6 |
| 1938 | Dichotomites burgeri Anderson p. 159 figs. Plate 28, figure 5 |
| 1938 | Dichotomites mutabilis Anderson p. 160 |
| 1956 | Homolsomites burgeri Imlay p. 1144 |
| 1956 | Homolsomites gregerseni Imlay p. 1144 |
| 1956 | Homolsomites mutabilis Imlay p. 1144 |
| 1956 | Homolsomites tehamaensis Imlay p. 1144 |
| 1960 | Homolsomites mutabilis Imlay p. 200 |
| 1970 | Tollia mutabilis Imlay and Jones pp. B36 - B38 figs. Plate 7, figures 1, 2, 4-12; plate 8, figures 1-10 |
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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.
†Tollia mutabilis Stanton 1895
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Invalid names: Dichotomites burgeri Anderson 1938 [synonym], Dichotomites gregerseni Anderson 1938 [synonym], Dichotomites tehamaensis Anderson 1938 [synonym]
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: base of the Valanginian to the top of the Coniacian or 139.80000 to 86.30000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Valanginian | USA (Oregon) | Tollia mutabilis (83606 225875) | |
| Valanginian | USA (California) | Tollia mutabilis (225864 225865 225868 225871) | |
| Coniacian | USA (California) | Dichotomites tehamaensis, Dichotomites gregerseni, Dichotomites burgeri (44239) |