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Pseudhelicoceras
Taxonomy
Pseudhelicoceras was named by Spath (1922) [Sepkoski's age data: K Albi-m K Albi-u]. Its type is Turrilites robertianus.
It was assigned to Ammonoidea by Sepkoski (2002); and to Turrilitidae by Matsumoto (1959), Atabekyan (1985), Henderson (1990), Mosavinia et al. (2014) and Tajika et al. (2018).
It was assigned to Ammonoidea by Sepkoski (2002); and to Turrilitidae by Matsumoto (1959), Atabekyan (1985), Henderson (1990), Mosavinia et al. (2014) and Tajika et al. (2018).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1922 | Pseudhelicoceras Spath p. 112 |
| 1953 | Hemiturrilites Breistroffer |
| 1953 | Parahelicoceras Breistroffer |
| 1953 | Subhelicoceras Breistroffer |
| 1959 | Pseudohelicoceras Matsumoto p. 156 |
| 1985 | Pseudhelicoceras Atabekyan p. 23 |
| 1990 | Pseudhelicoceras Henderson p. 133 |
| 2002 | Pseudhelicoceras Sepkoski |
| 2014 | Pseudhelicoceras Mosavinia et al. p. 84 |
| 2018 | Pseudhelicoceras Tajika et al. p. 72 |
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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.
G. †Pseudhelicoceras Spath 1922
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†Pseudhelicoceras carlottense Whiteaves 1884
†Pseudhelicoceras gracile Henderson 1990
†Pseudhelicoceras perelegans Spath 1937
†Pseudhelicoceras petersoni Anderson 1958
†Pseudhelicoceras quadrituberculatum Spath 1937
†Pseudhelicoceras robertianum d'Orbigny 1842
Invalid names: Hemiturrilites Breistroffer 1953 [synonym], Parahelicoceras Breistroffer 1953 [synonym], Subhelicoceras Breistroffer 1953 [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 Middle Albian to the top of the Cenomanian or 109.00000 to 93.90000 Ma
Collections (27 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Albian | Canada (British Columbia) | P. carlottense (87477 87478) P. sp. (87488 87490) | |
| Early/Lower Albian - Late/Upper Albian | France | P. sp. (58861) | |
| Middle Albian | South Africa | P. sp. (66006) | |
| Middle Albian | France | P. catenatum (56550) | |
| Middle Albian - Late/Upper Albian | Switzerland | P. robertianum, P. perelegans (197618) | |
| Late/Upper Albian | Australia (Northern Territory) | P. sp., P. gracile (70245) | |
| Late/Upper Albian | Iran | P. robertianum (174590) | |
| Late/Upper Albian | Turkmenistan | P. robertianum (183302 186544) | |
| Late/Upper Albian | France | P. robertianum (56526) P. sp. (56552 58359 58426) P. sp., P. robertianum (56674 56680 58126 58431) | |
| Late/Upper Albian | USA (California) | P. petersoni (1784) Pseudohelicoceras petersoni (225838) | |
| Late/Upper Albian | Angola | P. sp., P. quadrituberculatum (83840) | |
| Cenomanian | USA (California) | Turrilites petersoni (69609) | |
| Early/Lower Cenomanian | USA (California) | P. petersoni (1786) P. sp. (1789) | |
| Early/Lower Cenomanian - Middle Cenomanian | France | P. sp. (58626) |