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Asthenoceras
Taxonomy
Asthenoceras is a genus. It is not extant. Its type is Grammoceras nannodes.
It was assigned to Grammoceratinae by Westermann (1969); to Ammonoidea by Sepkoski (2002); and to Witchelliinae by Howarth (2013).
It was assigned to Grammoceratinae by Westermann (1969); to Ammonoidea by Sepkoski (2002); and to Witchelliinae by Howarth (2013).
Species
Synonymy list
Year | Name and author |
---|---|
1969 | Asthenoceras Westermann p. 58 |
2002 | Asthenoceras Sepkoski |
2013 | Asthenoceras Howarth p. 119 |
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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.
Diagnosis
No diagnoses are available