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Trilobita - Ptychopariida - Alokistocaridae

Parehmania was named by Deiss (1939) [Sepkoski's age data: Cm lMid Cm mMid-u Sepkoski's reference number: 479,522]. It is not extant.

It was assigned to Alokistocaridae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).

Species lacking formal opinion data

Synonymy list
YearName and author
1939Mcnairia Deiss
1939Parehmania Deiss
1939Rowia Deiss
2002Parehmania Jell and Adrain p. 422
2002Parehmania Sepkoski
2002Rowia Sepkoski

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderPtychopariidaSwinnerton 1915
familyAlokistocaridaeResser 1939
genusParehmaniaDeiss 1939

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. †Parehmania Deiss 1939
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Parehmania obscura Deiss 1939
Invalid names: Mcnairia Deiss 1939 [synonym], Rowia Deiss 1939 [synonym], Thomsonaspis Deiss 1939 [synonym]
No diagnoses are available
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: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-11 14:35:35
Modified: 2009-12-19 05:47:01
Source: f = family, c = class
References: Hendy 2009, Aberhan et al. 2004

Age range: base of the Delamaran to the top of the Menevian or 511.20000 to 499.50000 Ma

Collections (6 total)

Time interval Ma Country or state Original ID and collection number
Toyonian512.9 - 510.2Russian Federation P. lata (225260)
Delamaran511.2 - 506.5Mexico P. sp. (10688)
Amgan - Menevian510.2 - 499.5USA (Alaska) P. lata (8586)
St Davids509.0 - 497.0USA (Idaho/ Utah) P. sp. (218)
Menevian504.5 - 499.5USA (Wyoming) Mcnairia inornata (9120)
Marjumian504.5 - 497.0USA (Arizona) P. nitida (211)