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Duvalia grasiana
Taxonomy
Belemnites grasianus was named by Duval-Jouve (1841).
It was recombined as Duvalia grasi by Douvillé (1916); it was recombined as Duvalia grasiana by Janssen (2010).
It was recombined as Duvalia grasi by Douvillé (1916); it was recombined as Duvalia grasiana by Janssen (2010).
Sister 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.
†Duvalia grasiana Duval-Jouve 1841
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Diagnosis
No diagnoses are available