Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Symphysops spinifera

Artiopoda - Asaphida - Cyclopygidae

Taxonomy
Symphysops spinifera was named by Cooper and Kindle (1936). Its type specimen is USNM 87436, a cephalon/head, and it is a 3D body fossil.

Sister species lacking formal opinion data
S. mitrata, S. psyche, S. stevaninae, S. subarmatus, S. sulcata, S. psyche
Entered
by M. Hopkins on 2025-12-18; modified by M. Hopkins on 2025-12-18

Synonymy list
YearName and author
1936Symphysops spinifera Cooper and Kindle p. 367 figs. Plate 53, fig. 3

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
superfamilyCyclopygoideaRaymond 1925
familyCyclopygidae
genusSymphysopsRaymond 1925
speciesspinifera

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.

†Symphysops spinifera Cooper and Kindle 1936
show all | hide all
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobilef
Life habit: nektonicf
Diet: microcarnivoref
Vision: well-developedf
Created: 2009-06-11 14:46:35
Modified: 2012-08-27 07:32:19
Source: f = family, c = class
References: Hendy 2009, Aberhan et al. 2004

Age range: base of the Ashgill to the top of the Gamachian or 449.50000 to 443.10000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Edenian - Gamachian451.0 - 443.1Canada (Quebec) Symphysops spinifera (37799)
Richmondian - Gamachian449.6 - 443.1Canada (Quebec) Symphysops spinifera (37469 37790)
Ashgill449.5 - 443.1Canada (Quebec) Symphysops spinifera (13130)