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Sphaeragnostus
Taxonomy
Sphaeragnostus was named by Cooper and Kindle (1936). Its type is Agnostus similaris.
It was assigned to Sphaeragnostidae by Ahlberg (1989) and Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
It was assigned to Sphaeragnostidae by Ahlberg (1989) and Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
Species
Synonymy list
Year | Name and author |
---|---|
1936 | Sphaeragnostus Cooper and Kindle |
1989 | Sphaeragnostus Ahlberg |
1997 | Sphaeragnostus Whittington et al. p. 382 |
2002 | Sphaeragnostus 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. †Sphaeragnostus Cooper and Kindle 1936
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†Sphaeragnostus cingulatus Olin 1906
†Sphaeragnostus gaspensis Cooper and Kindle 1936
†Sphaeragnostus similaris Barrande 1872
Diagnosis
No diagnoses are available