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

Crepicephalus

Artiopoda - Ptychopariida - Crepicephalidae

Taxonomy
Crepicephalus was named by Owen (1852). Its type is Dikelocephalus iowensis.

It was reranked as Arionellus (Crepicephalus) by Meek and Hayden (1861).

It was assigned to Arionellus by Meek and Hayden (1861); to Ptychopariida by Sepkoski (2002); and to Crepicephalidae by Westrop (1992), Jell and Adrain (2002).

Synonymy list
YearName and author
1852Crepicephalus Owen
1861Arionellus (Crepicephalus) Meek and Hayden p. 436
1992Crepicephalus Westrop
2002Crepicephalus Jell and Adrain p. 361
2002Crepicephalus Sepkoski

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
familyCrepicephalidae
genusCrepicephalusOwen 1852

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. †Crepicephalus Owen 1852
show all | hide all
†Crepicephalus auratus Lochman 1938
†Crepicephalus australis Palmer 1954
†Crepicephalus buttsi Resser 1938
hide
†Crepicephalus buttsi montanaensis Lochman and Duncan 1944
Invalid names: Crepicephalus buttsi deadwoodensis Hu 1971 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Ribbing: noneg
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-02-26 12:06:08
Modified: 2009-02-26 20:06:08
Source: g = genus, f = family, c = class
References: Aberhan et al. 2004, Hendy 2009

Age range: base of the Boomerangian to the top of the Steptoean or 500.50000 to 493.50000 Ma

Collections (81 total)


Time interval Ma Country or state Original ID and collection number
Menevian504.5 - 499.5Canada (Yukon) C. norrisicanus, C. columbiensis, C. snowyensis, C. rabbitkettlei (9874)
Marjumian504.5 - 497.0Greenland (Peary Land) C. eos (49433 49434 49435 49449)
Marjumian504.5 - 497.0USA (Wisconsin) C. sp. (230)
Marjumian504.5 - 497.0USA (Nevada) C. sp. indet. (219682)
Marjumian504.5 - 497.0USA (Texas) C. auratus (14438 239884) C. australis (208621 208706 208707 208708) C. iowensis (208675)
Marjumian504.5 - 497.0USA (Tennessee) C. sp. indet. (207131)
Wangcunian504.5 - 497.0China (Shandong) C. magnus (232858)
Marjumian - Steptoean504.5 - 493.5Canada (Newfoundland) C. rivus (196021 196022 196023 196077 196100)
Boomerangian500.5 - 499.0Australia (Queenslandd) C. sp. H (225252)
Guzhangian500.5 - 497.0USA (Texas) C. australis (208660 208679 208680 208683)
Guzhangian500.5 - 497.0Canada (Newfoundland) C. sp. (198257)
Dresbachian - Steptoean497.0 - 493.5Canada (Newfoundland and Labrador) C. iowensis (54236 78935 78936)
Steptoean497.0 - 493.5USA (Virginia) C. rectus (6960)
Dresbachian497.0 - 486.85Canada (Yukon) C. columbiensis (55216 55217 55220) C. rabbitkettlei (55222 55279) C. snowyensis (55221)
Dresbachian497.0 - 486.85USA (Tennessee) C. convergens (235508)
Dresbachian497.0 - 486.85USA (South Dakota) C. auratus (7186 7187 7188 8020) C. buttsi (7193 7201 7284 7287 7403 8082) C. buttsi, C. auratus (7184 7199 7277 7686 8021) C. buttsi, C. deadwoodensis (7402) C. buttsimontanaenis (7285) C. buttsimotanaensis, C. auratus (7190) C. rectus, C. buttsi (7182 7404) C. rectus, C. buttsi, C. auratus (7183 8023) C. snowyenis (7375) C. snowyensis (7294 7374) C. sp. (231)
Dresbachian497.0 - 486.85USA (Wyoming) C. rectus, C. buttsi, C. auratus (8076)
Dresbachian497.0 - 486.85Canada (Nunavut) C. sp. (10775 10776 10777)
Dresbachian497.0 - 486.85Canada (Northwest Territories) C. sp. (25605)
Furongian497.0 - 486.85USA (Utah) C. sp. (156411 156412 156415 156416 156417 156418 156419 156421 156422 156479 156480)
Merioneth497.0 - 486.85USA (Pennsylvania) C. sp. 1 (77688)