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Clavicosta
Taxonomy
Clavicosta was named by Newell (1938) [Sepkoski's age data: C Step-l P Guad-u Sepkoski's reference number: 524].
It was assigned to Aviculopectinidae by Newell (1938), Carter et al. (1998), Dickins (1999); and to Pterioida by Sepkoski (2002).
It was assigned to Aviculopectinidae by Newell (1938), Carter et al. (1998), Dickins (1999); and to Pterioida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Clavicosta Newell |
| 1998 | Clavicosta Carter et al. p. 1001 |
| 1999 | Clavicosta Dickins p. 32 |
| 2002 | Clavicosta 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. †Clavicosta Newell 1938
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†Clavicosta dashizhaiensis Liang 1980
†Clavicosta echinata Newell 1938
†Clavicosta rugatula Waterhouse 1978
†Clavicosta wuchangensis Liang 1980
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 3 | 43.8 | 30.5 | 60.1 | 46.0 | 14.8 | |
| valve height | 3 | 61.0 | 36.0 | 100.0 | 63.0 | 32.1 |
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: base of the Late/Upper Mississippian to the top of the Changhsingian or 330.30000 to 251.90200 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Mississippian | USA (California) | C. sp. A (143621) | |
| Kashirian - Myachkovian | USA (New Mexico) | C. echinata (46548) | |
| Virgilian | USA (Kansas) | C. sp. (846 849 850) | |
| Gzhelian - Cisuralian | USA (California) | C. sp. B (143627) | |
| Asselian | USA (Kansas) | C. sp. (795 848 863 12240 12427 12440) | |
| Sakmarian | USA (Kansas) | C. echinata (82801 115885) | |
| Noginskian | USA (Kansas) | C. sp. (11696 11739) | |
| Roadian - Wordian | China (Nei Mongol) | C. dashizhaiensis (111147) | |
| Guadalupian | USA (California) | C. sp. (132331) | |
| Wordian - Capitanian | China (Heilongjiang) | C. wuchangensis (111763) | |
| Changhsingian | Nepal | C. rugatula (43185 43190 43194 43220 43221 62441) |