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Montezumaspis

Trilobita - Redlichiida - Holmiidae

Taxonomy
Montezumaspis was named by Hollingsworth (2006). Its type is Palmettaspis parallela.

It was assigned to Holmiidae by Hollingsworth (2006).

Synonymy list
YearName and author
2006Montezumaspis Hollingsworth p. 314

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
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.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: deposit feedero
Vision: well-developedf
Created: 2009-12-21 06:03:46
Modified: 2009-12-21 08:03:46
Source: f = family, o = order, c = class
References: Hendy et al. 2009, Whittington et al. 1997, Aberhan et al. 2004

Age range: Montezuman or 520.00000 to 515.30000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Montezuman520.0 - 515.3USA (Nevada) Esmeraldina cometes (10555 69466) M. cometes (140517 140518 140555 140556) M. parallela (140500 140501 140503 140507 140511 140512 140513 140514 140544) M. parallela, M. cometes (140498 140499 140502 140504 140505 140506 140508 140509 140510 140515 140516)