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Mexicaspis difuntosensis

Trilobita - Corynexochida - Zacanthoididae

Taxonomy
Mexicaspis difuntosensis was named by Lochman (1952). Its type specimen is U.S.N.M. No.115766, a cephalon/head (cranidium), and it is a 3D body fossil.

Synonymy list
YearName and author
1952Mexicaspis difuntosensis Lochman pp. 139-141 figs. 10-23

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderCorynexochida
suborderCorynexochinaKobayashi 1935
familyZacanthoididaeSwinnerton 1915
genusMexicaspis
speciesdifuntosensis

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.

Mexicaspis difuntosensis Lochman 1952
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Diagnosis
ReferenceDiagnosis
C. Lochman 1952The species is readily distinguished from Mexicaspis stenopyge Lochman, by (i) posterior part of glabella wider so that forward expansion appears less, (2) glabella moderately convex, (3) dorsal furrow in front of glabella and marginal furrow distincton outer surface, (4) pygidium with broader proportions, and (5) the lateral direction of the posterior pair of marginal spines.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobileo
Life habit: nektobenthico
Diet: carnivoreo
Vision: well-developedf
Created: 2009-06-11 19:40:14
Modified: 2009-12-15 01:40:01
Source: f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy 2009, Hendy et al. 2009

Age range: Solvan or 508.20000 to 504.50000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Delamaran - Menevian509.7 - 499.5Mexico Mexicaspis difuntosensis (10687)
Solvan508.2 - 504.5USA (Nevada) Mexicaspis difuntosensis (9436 9457 9462)