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Ptychosphaera
Taxonomy
Ptychosphaera was named by Perner (1903) [Sepkoski's age data: S Ludl-u S Prid Sepkoski's reference number: 615]. It is not extant. Its type is Ptychosphaera constricta.
It was assigned to Bellerophontinae by Knight et al. (1960); to Cymbulariinae by Horný (1963); and to Bellerophontida by Sepkoski (2002).
It was assigned to Bellerophontinae by Knight et al. (1960); to Cymbulariinae by Horný (1963); and to Bellerophontida by Sepkoski (2002).
Species
P. amplifalcata, P. carinata, P. constricta (type species), P. convolutus, P. obesa, P. ouralicus, P. thalia
Synonymy list
| Year | Name and author |
|---|---|
| 1903 | Ptychosphaera Perner |
| 1960 | Ptychosphaera Knight et al. p. 182 |
| 1963 | Ptychosphaera Horný |
| 2002 | Ptychosphaera Sepkoski |
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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. †Ptychosphaera Perner 1903
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†Ptychosphaera amplifalcata Wang 1980
†Ptychosphaera carinata de Sowerby and Murchison 1839
†Ptychosphaera constricta Perner 1903
†Ptychosphaera convolutus de Koninck 1876
†Ptychosphaera obesa Wang 1980
†Ptychosphaera ouralicus Murchison et al. 1845
†Ptychosphaera thalia Hall 1859
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 12.3 | 12.0 | 12.7 | 12.3 | 0.495 |
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| Source: f = family, o = order, c = class | |||||
| References: Hendy 2009, Kiessling 2004 | |||||
Age range: base of the Telychian to the top of the Changhsingian or 438.50000 to 252.17000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Telychian | United Kingdom (Wales) | Bucaniopsis carinatus (56394) | |
| Gorstian | Czech Republic (Praha) | P. constricta (58980 154949 154950) | |
| Gorstian | Ukraine (Podolia) | Bellerophon uralicus (155617) | |
| Ludfordian | Canada (Nova Scotia) | Cymbularia carinata (3843) | |
| Pridoli | Czech Republic (Praha) | P. constricta (155864) | |
| Lochkovian | Morocco | P. constricta (13935 13936) | |
| Lochkovian | Czech Republic (Praha) | P. constricta (56216) | |
| Emsian | Australia (New South Wales) | P. convolutus (43890) | |
| Givetian | USA (New York) | Bellerophon thalia (155419) | |
| Changhsingian | China (Guizhou) | P. amplifalcata (112091) P. obesa (112017) |