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Circulus
Taxonomy
Circulus was named by Jeffreys (1842) [Sepkoski's age data: T Than-l R Sepkoski's reference number: 794]. It is extant. Its type is Circulus duminyi.
It was reranked as Vitrinella (Circulus) by Maury (1917).
It was assigned to Vitrinella by Maury (1917); to Cyclostrematidae by Harris and Palmer (1947) and Gardner (1948); to Adeorbinae by Marquet (1997); to Adeorbiidae by Lozouet (1998); to Vitrinellidae by Gardner (1947), Todd (2001) and Wienrich (2001); and to Archaeogastropoda by Sepkoski (2002).
It was reranked as Vitrinella (Circulus) by Maury (1917).
It was assigned to Vitrinella by Maury (1917); to Cyclostrematidae by Harris and Palmer (1947) and Gardner (1948); to Adeorbinae by Marquet (1997); to Adeorbiidae by Lozouet (1998); to Vitrinellidae by Gardner (1947), Todd (2001) and Wienrich (2001); and to Archaeogastropoda by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
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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. Circulus Jeffreys 1842
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Circulus duminyi Requiem 1842
†Circulus enaulus Lozouet 1998
†Circulus estotensis Lozouet 1998
†Circulus hennei Glibert 1952
Circulus liratus Verrill 1882
†Circulus occidentalis Pilsbry and Olsson 1941
†Circulus ottonius Harris and Palmer 1947
†Circulus paulensis Lozouet 1998
†Circulus rakhiensis Eames 1952
†Circulus sigaretornuformis Lozouet 1998
†Circulus striatus Philippi 1836
†Circulus supranitidus Wood 1842
†Vitrinella (Circulus) striata Gabb 1873
Diagnosis
No diagnoses are available