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Spyroceras crotalum
Taxonomy
Orthoceras crotalum was named by Hall (1879). It is not extant. It is the type species of Spyroceras.
It was recombined as Spyroceras crotalum by Kröger (2008).
It was recombined as Spyroceras crotalum by Kröger (2008).
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1879 | Orthoceras crotalum Hall |
2008 | Spyroceras crotalum Kröger |
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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.
†Spyroceras crotalum Hall 1879
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Diagnosis
No diagnoses are available