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Spyroceras crotalum

Cephalopoda - Pseudorthocerida - Spyroceratidae

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).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1879Orthoceras crotalum Hall
2008Spyroceras crotalum Kröger

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
RankNameAuthor
phylumMollusca
classCephalopodaCuvier 1797
orderPseudorthocerida
familySpyroceratidaeShimizu and Obata 1935
genusSpyrocerasHyatt 1884
speciescrotalum(Hall 1879)

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