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Knoxiella infirma

Ostracoda - Palaeocopida - Knoxitidae

Taxonomy
Knoxiella infirma was named by Shi (1982).

It was recombined as Geisina infirma by Crasquin-Soleau (1997).

Sister species lacking formal opinion data
K. reticulata, K. suboblonga

Synonymy list
YearName and author
1982Knoxiella infirma Shi
1987Knoxiella infirma Shi and Chen p. 33 figs. Pl 16, figs 6-11
1997Geisina infirma Crasquin-Soleau p. 56 figs. Pl 3, fig 15
2004Knoxiella infirma Crasquin-Soleau et al. p. 282 figs. Pl 1, figs 1-3
2010Knoxiella infirma Crasquin and Forel p. 336 fig. 3I,J

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
—Deuteropoda
—Mandibulata
—PancrustaceaZrzavý and Štys 1997
RankNameAuthor
—Hymenostraca(Rolfe 1969)
superclassOligostracaZrzavý et al. 1997
classOstracoda
subclassPodocopaSars 1865
orderPalaeocopidaHenningsmoen 1953
suborderKloedenellocopinaScott 1961
superfamilyKloedenelloidea(Ulrich and Bassler 1908)
familyKnoxitidaeEgorov 1950
genusKnoxiella
speciesinfirmaShi 1982

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.

†Knoxiella infirma Shi 1982
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Diagnosis
No diagnoses are available
Measurements
partNmeanminimummaximummedians.d.
carapace height30.3430.3000.4500.3000.087
shell height30.4550.3000.8500.3700.299
valve height20.3660.3530.3790.3660.018

Composition: low Mg calcitec
Environment: hypersaline, marine, brackish, freshwaterc
Locomotion: actively mobilec
Life habit: epifaunalo
Diet: suspension feedero
Vision: limitedc
Created: 2010-02-06 00:42:06
Modified: 2010-02-23 22:46:12
Source: o = order, c = class
References: Alvarez et al. 2008, Kiessling 2004

Age range: base of the Artinskian to the top of the Changhsingian or 290.10000 to 252.17000 Ma

Collections (16 total)


Time interval Ma Country or state Original ID and collection number
Artinskian290.1 - 279.3Canada (British Columbia) Geisina infirma (106671)
Wordian266.9 - 264.28Turkey Knoxiella infirma (47801 47905)
Changhsingian254.17 - 252.17China (Zhejiang) Knoxiella infirma (97919 117588 117590 117592 117595 117596 117597 117598 117601 117625 117671)
Changhsingian254.17 - 252.17Saudi Arabia Knoxiella infirma (87277 87282)