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Montezumaspis

Trilobita - Redlichiida - Holmiidae

Taxonomy

Synonymy list
YearName and author
2006Montezumaspis Hollingsworth p. 314

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
Life
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderRedlichiidaRichter 1932
suborderOlenellina
superfamilyOlenelloidea
familyHolmiidaeHupé 1953
genusMontezumaspis

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. †Montezumaspis Hollingsworth 2006
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Montezumaspis cometes Fritz 1995
Diagnosis
ReferenceDiagnosis
J. S. Hollingsworth 2006Holmiid with preglabellar field. Glabella narrow,
LA equal to or slightly wider than L0, S3 faint, L3 shorter (exsag.) than L2, L1, or L0 which are about equal, L0 with pos- terior axial spine, axial furrow uniform. Ocular lobes long. Ex- traocular area wide. Reticulate sculpture prominent on larger ce- phala. Thorax of 17 segments, T3 mildly amplipleural, pleural spines weakly thornlike to sentate. T13 has long, posteriorly di- rected axial spine; posterior to T13, thorax strongly tapered. Py- gidium expands backward, posterior margin straight, posterolateral corners rounded. Axis triangular to subtriangular, not reaching posterior margin.