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Pseudhelicoceras petersoni
Taxonomy
Turrilites petersoni was named by Anderson (1958). It is a 3D body fossil. Its type locality is CAS Loc. 1291, Peterson Ranch, which is in a Cenomanian offshore shale in the Antelope Formation of California.
It was recombined as Pseudohelicoceras petersoni by Matsumoto (1959); it was recombined as Pseudhelicoceras petersoni by Murphy and Rodda (1960).
It was recombined as Pseudohelicoceras petersoni by Matsumoto (1959); it was recombined as Pseudhelicoceras petersoni by Murphy and Rodda (1960).
Synonymy list
| Year | Name and author |
|---|---|
| 1958 | Turrilites petersoni Anderson p. 193 figs. Plate 12, figure 6; Plate 75, figure 4 |
| 1959 | Pseudohelicoceras petersoni Matsumoto p. 156 |
| 1960 | Pseudhelicoceras petersoni Murphy and Rodda p. 847 figs. PL 107, figs. 1,2,3 |
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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.
†Pseudhelicoceras petersoni Anderson 1958
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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 2004, Kiessling 2003 | |||||
Age range: Cenomanian or 100.50000 to 93.90000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Albian | USA (California) | Pseudhelicoceras petersoni (1784) Pseudohelicoceras petersoni (225838) | |
| Cenomanian | USA (California) | Turrilites petersoni (type locality: 69609) | |
| Early/Lower Cenomanian | USA (California) | Pseudhelicoceras petersoni (1786) |