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Holcacephalus
Taxonomy
Holcacephalus was named by Resser (1938) [Sepkoski's age data: Cm uMid-u Cm Dres-l]. It is not extant.
It was assigned to Ptychopariida by Sepkoski (2002); and to Norwoodiidae by Jell and Adrain (2002).
It was assigned to Ptychopariida by Sepkoski (2002); and to Norwoodiidae by Jell and Adrain (2002).
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1938 | Holcacephalus Resser |
2002 | Holcacephalus Jell and Adrain p. 384 |
2002 | Holcacephalus Sepkoski |
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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. †Holcacephalus Resser 1938
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Diagnosis
No diagnoses are available