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Howellaspis

Trilobita - Ptychopariida - Menomoniidae

Taxonomy
Howellaspis was named by Lochmann and Denson (1944). It is not extant.

It was assigned to Menomoniidae by Jell and Adrain (2003).

Synonymy list
YearName and author
1944Howellaspis Lochmann and Denson
2003Howellaspis Jell and Adrain p. 385

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumMandibulata
classTrilobitaWalch 1771
orderPtychopariidaSwinnerton 1915
familyMenomoniidaeWalcott 1916
genusHowellaspisLochmann and Denson 1944

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