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Morphology Ecology and taphonomy   Age range and collections

Holmdalia

Trilobita - Agnostida - Marjumiidae

Taxonomy
Holmdalia was named by Robison (1988) [Sepkoski's age data: Cm uMid-u Sepkoski's reference number: 1017]. It is not extant.

It was assigned to Ptychopariida by Sepkoski (2002); and to Marjumiidae by Jell and Adrain (2003).

Synonymy list
YearName and author
1988Holmdalia Robison
2002Holmdalia Sepkoski, Jr.
2003Holmdalia Jell and Adrain p. 384

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAgnostidaSalter 1864
superfamilyAgnostoideaM'Coy 1849
familyMarjumiidaeKobayashi 1935
genusHolmdaliaRobison 1988

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