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Craspedona
Taxonomy
Craspedona was named by Cooper and Grant (1975) [Sepkoski's age data: P Guad-u Sepkoski's reference number: 7]. Its type is Craspedona newelli.
It was assigned to Institellinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was assigned to Institellinae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Species
C. limbata, C. newelli (type species)
Synonymy list
Year | Name and author |
---|---|
1975 | Craspedona Cooper and Grant pp. 881-882 |
2000 | Craspedona Williams et al. p. 599 |
2002 | Craspedona 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. †Craspedona Cooper and Grant 1975
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†Craspedona limbata Girty 1908
†Craspedona newelli Cooper and Grant 1975
Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 5 | 6.81 | 6.20 | 8.00 | 6.60 | 0.713 |
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Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
References: Nesnidal et al. 2013, Williams et al. 2000, Aberhan et al. 2004 |
Age range: base of the Roadian to the top of the Capitanian or 272.30000 to 259.51000 Ma
Collections (20 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Roadian | USA (Texas) | C. newelli (81693) | |
Wordian | USA (Texas) | C. newelli (81619 81939 101867 102619 105896 106108 106139 106244 106245 106299) Productus limbatus (108821) | |
Capitanian | USA (Texas) | C. newelli (81623 81706 105894 105895 106243 106246 106248 106249) |