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Syspacephalus gregarius

Artiopoda - Ptychopariida - Ptychopariidae

Taxonomy
Syspacephalus gregarius was named by Rasetti (1951). Its type specimen is USNM 116075 and is a 3D body fossil.

Sister species lacking formal opinion data
S. kamyschovae, S. laevigatus, S. perola, S. uncus

Synonymy list
YearName and author
1951Syspacephalus gregarius Rasetti pp. 242 - 243 figs. Plate 8, figures 14-19

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyPtychopariidaeMatthew 1887
genusSyspacephalusPoulson 1927
speciesgregarius

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.

†Syspacephalus gregarius Rasetti 1951
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 1.0 to < 10g
Adult width: 1.0 to < 10g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-09 21:28:10
Modified: 2009-06-09 23:28:10
Source: g = genus, f = family, c = class
References: Hendy 2009, Aberhan et al. 2004

Age range: Delamaran or 509.70000 to 505.30000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Delamaran509.7 - 505.3Canada (British Columbia) Syspacephalus gregarius (225262)