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Astegosia
Taxonomy
Astegosia was named by Cooper and Grant (1969) [Sepkoski's age data: P Leon-m P Guad-u Sepkoski's reference number: 7]. Its type is Squamularia subquadrata.
It was assigned to Spiriferida by Sepkoski (2002); and to Phricodothyridinae by Williams et al. (2006).
It was assigned to Spiriferida by Sepkoski (2002); and to Phricodothyridinae by Williams et al. (2006).
Species
Synonymy list
Year | Name and author |
---|---|
1969 | Astegosia Cooper and Grant p. 2256 |
2002 | Astegosia Sepkoski |
2006 | Astegosia Williams et al. p. 1866 |
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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.
Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 104 | 10.1 | 1.30 | 28.5 | 10.4 | 5.99 | |
valve height | 1 | 16.6 | - | - | - | - |
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Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
References: Nesnidal et al. 2013, Aberhan et al. 2004 |
Age range: base of the Asselian to the top of the Capitanian or 298.90000 to 259.90000 Ma
Collections (36 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Asselian | China (Xinjiang) | A. sp. (105228) | |
Sakmarian | China (Xinjiang) | A. sp. (35514) | |
Kungurian | China (Xinjiang) | A. sp. (62808) | |
Roadian | Thailand (Trang) | A. sp. (40872 40879) | |
Capitanian | USA (New Mexico) | A. subquadrata (81620 81629 81955 81962 81964 81966 102609 102622 102625 102628 105989 106253 106302) | |
Capitanian | USA (Texas) | A. subquadrata (81589 81590 81591 81611 81613 81614 81615 81967 101798 101809 102618 105893 105904 105995 106250 106252) Squamularia subquadrata (108801 108812) |