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

Celmus

Artiopoda - Ptychopariida - Raymondinidae

Taxonomy
Celmus was named by Angelin (1854) [Sepkoski's age data: O Aren-u Sepkoski's reference number: 1066]. It is not extant. Its type is Celmus granulatus. It is the type genus of Celmidae.

It was assigned to Dimeropygidae by Jell and Adrain (2002); to Proetida by Sepkoski (2002); to Celminae by Bergström and Suzuki (2005); and to Raymondinidae by Adrain and Westrop (2007).

Species
C. granulatus (syn. Crotalurus barrandei) (type species), C. michaelmus, Ischyrophyma tuberculata, Ischyrophyma tumida
Entered
by J. Sepkoski on 2003-01-23; modified by P. Novack-Gottshall on 2025-01-04

Synonyms
Synonymy list
YearName and author
1854Celmus Angelin
1858Crotalurus Volborth
1963Ischyrophyma Whittington p. 48
2002Celmus Jell and Adrain p. 355
2002Celmus Sepkoski
2002Ischyrophyma Sepkoski
2005Celmus Bergström and Suzuki p. 243
2007Celmus Adrain and Westrop p. 346

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

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyRaymondinidaeClark 1924
genusCelmusAngelin 1854

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. †Celmus Angelin 1854
show all | hide all
†Celmus granulatus Angelin 1854
hide
Invalid names: Crotalurus barrandei Volborth 1858 [synonym]
†Celmus michaelmus Adrain and Fortey 1997
Invalid names: Crotalurus Volborth 1858 [synonym], Ischyrophyma Whittington 1963 [synonym]
Diagnosis
No diagnoses are available
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: 2010-01-02 06:54:19
Modified: 2010-01-02 08:54:19
Source: f = family, c = class
References: Whittington et al. 1997, Aberhan et al. 2004

Age range: base of the Langevoja to the top of the Katian or 472.10000 to 445.20000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Ordovician486.85 - 471.3Canada (Newfoundland) Ischyrophyma sp. (198245)
Arenig477.1 - 468.0Canada (Newfoundland and Labrador) Ischyrophyma sp. (78092)
Langevoja472.1 - 469.1Sweden C. sp. (198067 198073 198074)
Hunderum472.1 - 465.9Sweden C. granulatus (198049)
Castlemainian - Yapeenian471.3 - 469.4Ireland C. michaelmus (153922)
Chazyan471.3 - 457.3Canada (Newfoundland and Labrador) Ischyrophyma sp., Ischyrophyma tumida (104861) Ischyrophyma tumida (104805)
Whiterockian471.3 - 457.3Canada (Newfoundland and Labrador) Ischyrophyma sp., Ischyrophyma tuberculata (104752) Ischyrophyma sp., Ischyrophyma tumida (104862)
Whiterockian471.3 - 457.3USA (Nevada) Ischyrophyma sp. (80065)
Llanvirn468.0 - 458.2Canada (Newfoundland and Labrador) Ischyrophyma sp. (78099)
Sandbian458.2 - 452.8China (Gansu) Ischyrophyma zhiqiangi (182202)
Katian452.8 - 445.2China (JiangSu) Ischyrophyma sp. (192794 192796)