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Sphaeragnostidae

Agnostida - Sphaeragnostidae

Taxonomy
Sphaeragnostidae was named by Kobayashi (1939). It is not extant.

It was assigned to Agnostida by Whittington et al. (1997).

Subtaxa
Sphaeragnostus

Synonymy list
YearName and author
1939Sphaeragnostidae Kobayashi p. 177
1997Sphaeragnostidae Whittington et al. p. 381

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
orderAgnostidaSalter 1864
familySphaeragnostidaeKobayashi 1939
familySphaeragnostidaeKobayashi 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.

Fm. †Sphaeragnostidae Kobayashi 1939
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G. †Sphaeragnostus Cooper and Kindle 1936
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†Sphaeragnostus gaspensis Cooper and Kindle 1936
†Sphaeragnostus similaris Barrande 1872
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindf
Created: 2009-12-13 02:45:45
Modified: 2009-12-13 04:45:45
Source: f = family, o = order
References: Kiessling 2004, Whittington et al. 1997

Age range: base of the Sarka to the top of the Rawtheyan or 466.00000 to 445.20000 Ma

Collections (20 total)


Time interval Ma Country or state Original ID and collection number
Sarka466.0 - 466.0Czech Republic Sphaeragnostus sp. (3857)
Llandeilo461.1 - 458.4United Kingdom Sphaeragnostus sp. (234028)
Dobrotivian459.0 - 457.9Czech Republic Sphaeragnostus sp. (3859)
Sandbian458.4 - 453.0China (Xinjiang) Sphaeragnostus similaris (188342 188345 188346)
Actonian - Onnian454.0 - 449.5China (AnHui) Sphaeragnostus sp. (7835)
Actonian - Onnian454.0 - 449.5China (ZheJiang) Sphaeragnostus sp. (7809)
Actonian - Onnian454.0 - 449.5China (JiangSu) Sphaeragnostus sp. (7942)
Katian453.0 - 445.2China (JiangSu) Sphaeragnostus cerus (192794)
Richmondian - Gamachian449.6 - 443.7Canada (Quebec) Sphaeragnostus gaspeensis (37790) Sphaeragnostus gaspensis (37469)
Pusgillian449.5 - 449.2Sweden Sphaeragnostus sp. (2773)
Pirgu449.5 - 445.2Sweden (Scania) Sphaeragnostus cingulatus (166227)
Pirgu449.5 - 445.2Denmark Sphaeragnostus cingulatus (166332)
Pirgu449.5 - 445.2Poland Sphaeragnostus cingulatus (164846)
Pirgu449.5 - 445.2Sweden (Skane) Sphaeragnostus cingulatus (166226)
Ashgill449.5 - 443.7USA (Maine) Sphaeragnostus sp. (185954)
Rawtheyan448.8 - 445.2United Kingdom (England) Sphaeragnostus sp. (3671 3676)