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Trilobita - Asaphida - Remopleurididae

Richardsonella was named by Raymond (1924) [Sepkoski's age data: Cm Fran-u Cm Trep Sepkoski's reference number: 16,484].

It was assigned to Asaphida by Sepkoski (2002); and to Remopleurididae by Robison and Pantoja-Alor (1968) and Jell and Adrain (2002).

Synonymy list
YearName and author
1924Richardsonella Raymond
1968Richardsonella Robison and Pantoja-Alor p. 794
2002Richardsonella Jell and Adrain p. 440
2002Richardsonella Sepkoski

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderAsaphidaSalter 1864
superfamilyAsaphoideaSalter 1864
familyRemopleurididaeHawle and Corda 1847
genusRichardsonellaRaymond 1924

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. †Richardsonella Raymond 1924
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Richardsonella convexa Rasetti 1944
Richardsonella cristata Billings 1860
Richardsonella elongata Rasetti 1944
Richardsonella megalops Billings 1860
Richardsonella unisulcata Rasetti 1944
Richardsonella variagranula Robison and Pantoja-Alor 1968
No diagnoses are available
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: actively mobilef
Life habit: nektobenthicf
Diet: carnivorec
Vision: well-developedf
Created: 2009-04-13 10:12:30
Modified: 2009-12-14 07:33:04
Source: f = family, c = class
References: Hendy et al. 2009, Aberhan et al. 2004

Age range: base of the Paibian to the top of the Tremadocian or 497.00000 to 477.70000 Ma

Collections (19 total)

Time interval Ma Country or state Original ID and collection number
Cambrian538.8 - 485.4USA (Alaska) R. sp. (114979)
Paibian497.0 - 494.0USA (Alaska) R. sp. 2 (233750)
Franconian - Trempealeauan497.0 - 485.4Australia (Queensland) R. kainelliformis (198279) R. sp. (198277 198278)
Merioneth497.0 - 485.4USA (Vermont) R. arctostriata (8976)
Iverian494.0 - 489.5Australia (Queensland) R. sp. (198297)
Dolgellian492.5 - 485.4Canada (Quebec) R. convexa (8933)
Trempealeauan492.5 - 485.4Canada (Quebec) R. elongata (224133) R. megalops, R. cristata, R. convexa (224138) R. unisulcata (224136)
Trempealeauan492.5 - 485.4USA (Nevada) R. eurekensis (233789)
Niuchehean489.5 - 485.4China (Jilin Provence) R. lilia (156921 156922 156924) R. sp., R. lilia (156928)
Tremadoc486.5 - 477.7Mexico (Oaxaca) R. variagranula (9845)
Tremadoc486.5 - 477.7Bolivia R. sp. (8838)
Tremadocian485.4 - 477.7Canada (Newfoundland) R. sp. (198242)