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Croixana
Taxonomy
Croixana was named by Nelson (1951) [Sepkoski's age data: Cm Fran-l Cm Fran-u Sepkoski's reference number: 488]. It is not extant.
It was assigned to Parabolinoididae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Parabolinoididae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Synonymy list
Year | Name and author |
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1951 | Croixana Nelson |
2002 | Croixana Jell and Adrain p. 361 |
2002 | Croixana 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. †Croixana Nelson 1951
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: f = family, c = class | |||||
References: Whittington et al. 1997, Aberhan et al. 2004 |
Age range: Sunwaptan or 493.50000 to 487.50000 Ma
Collections (7 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Franconian | USA (Montana) | C. bipunctata (249) C. sp. (247) | |
Franconian | USA (Idaho) | C. sp. (184601) | |
Sunwaptan | Canada (Alberta) | C. ambigua (81296) C. ambigua, C. inflata (54091 64687) C. inflata (81299) |