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Glyphaspis concavus

Artiopoda - Olenida - Asaphiscidae

Taxonomy
Glyphaspis concavus was named by Sundberg (1994). Its type specimen is LACMIP 11931, a cephalon/head, and it is a 3D body fossil. Its type locality is Dugway Range, 36.80m, LACMIP 15543, which is in a Delamaran marine limestone in the Trailer Formation of Utah.

Sister species lacking formal opinion data
G. robusta, G. tecta

Synonymy list
YearName and author
1994Glyphaspis concavus Sundberg pp. 100 - 101 figs. Figure 64

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
classTrilobitaWalch 1771
orderOlenida
familyAsaphiscidaeRaymond 1924
genusGlyphaspisPoulson 1927
speciesconcavus

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.

†Glyphaspis concavus Sundberg 1994
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Diagnosis
ReferenceDiagnosis
F. A. Sundberg 1994Glyphaspis with cranidium with short, strongly tapered glabella from lobe L2 to anterior end, frontal lobe bluntly rounded; trans- versely wide anterior margin (80-95% cranidial width); sagittally long frontal area (45-50% cranidi- al length); concave, wide anterior border; very shallow anterior border furrow. Pygidium relatively transversely elongate, axis reaches margin of pleural field or extends onto border, faint postaxial ridge.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-12-19 03:48:56
Modified: 2009-12-19 05:48:56
Source: f = family, c = class
References: Whittington et al. 1997, Aberhan et al. 2004

Age range: Delamaran or 509.70000 to 505.30000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Delamaran509.7 - 505.3USA (Utah) Glyphaspis concavus (10565 134067 134068 134069 134070 134111 134112 type locality: 134113 134114 134115 134116 134117)
Delamaran509.7 - 505.3USA (Nevada) Glyphaspis concavus (134248 134249 134250 134252 134253)