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Hammatocyclus
Taxonomy
Hammatocyclus was named by Schindewolf (1951) [Sepkoski's age data: C Tour-l C Vise-l Sepkoski's reference number: 954,1042]. It is not extant. Its type is Pericyclus (Hammatocyclus) homoceratoides.
It was reranked as Pericyclus (Hammatocyclus) by Schindewolf (1951); it was reranked as Rotopericyclus (Hammatocyclus) by Gordon (1986).
It was assigned to Pericyclus by Schindewolf (1951); to Rotopericyclus by Gordon (1986); to Goniatitida by Sepkoski (2002); to Pericyclinae by Korn (2006), Furnish et al. (2009); and to Hammatocyclinae by Ebbighausen et al. (2010).
It was reranked as Pericyclus (Hammatocyclus) by Schindewolf (1951); it was reranked as Rotopericyclus (Hammatocyclus) by Gordon (1986).
It was assigned to Pericyclus by Schindewolf (1951); to Rotopericyclus by Gordon (1986); to Goniatitida by Sepkoski (2002); to Pericyclinae by Korn (2006), Furnish et al. (2009); and to Hammatocyclinae by Ebbighausen et al. (2010).
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Hammatocyclus Schindewolf |
| 1951 | Pericyclus (Hammatocyclus) Schindewolf |
| 1986 | Rotopericyclus (Hammatocyclus) Gordon p. 31 |
| 2002 | Hammatocyclus Sepkoski |
| 2006 | Hammatocyclus Korn |
| 2009 | Hammatocyclus Furnish et al. p. 26 |
| 2010 | Hammatocyclus Ebbighausen et al. p. 158 |
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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. †Hammatocyclus Schindewolf 1951
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†Hammatocyclus brazerensis Gordon 1986
†Hammatocyclus confinis Kusina 1977
†Hammatocyclus corrugatus Ebbighausen et al. 2010
†Hammatocyclus crenulatus de Koninck 1880
†Hammatocyclus homoceratoides Schindewolf 1951
†Hammatocyclus incertus Kusina and Konovalova 2004
†Hammatocyclus latumbilicatus Kullmann 1961
†Hammatocyclus pollex Ebbighausen et al. 2010
†Hammatocyclus tuberculatus Delepine 1940
†Hammatocyclus tumidus Roemer 1852
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 25 | 14.2 | 1.90 | 35.7 | 15.6 | 7.16 | |
| shell diameter | 25 | 36.5 | 5.10 | 80.3 | 40.0 | 15.7 | |
| shell inflation | 25 | 12.6 | 2.10 | 21.3 | 14.0 | 4.28 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: base of the Kinderhookian to the top of the Chadian or 358.86000 to 339.90000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kinderhookian - Ivorian | USA (Utah) | Rotopericyclus brazerensis (6220 6222 6223) | |
| Kinderhookian - Ivorian | USA (Montana) | Rotopericyclus sp. (6215) | |
| Tournaisian | Uzbekistan | H. sp. (172406) | |
| Chadian | Algeria | H. pollex, H. corrugatus (224275) |