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Dawsonia

Agnostida - Eodiscidae

Taxonomy
Dawsonia was named by Hartt (1868) [Sepkoski's age data: ]. It is not extant.

It was assigned to Eodiscidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).

Species
D. dawsoni
Species lacking formal opinion data
D. bohemica

Synonyms
Synonymy list
YearName and author
1868Dawsonia Hartt p. 655
1950Aculeodiscus Snajdr
1958Aculeodiscus Snajdr p. 43
1997Dawsonia Whittington et al. p. 401
2002Dawsonia Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
orderAgnostidaSalter 1864
suborderEodiscina
familyEodiscidaeRaymond 1913
genusDawsoniaHartt 1868

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. †Dawsonia Hartt 1868
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†Dawsonia dawsoni Hartt 1868
Invalid names: Aculeodiscus Snajdr 1950 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Entire body: yesf
Adult length: 1.0 to < 10f
Adult width: 1.0 to < 10f
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindg
Created: 2009-12-13 02:28:00
Modified: 2009-12-13 04:28:00
Source: g = genus, f = family, o = order
References: Whittington et al. 1997, Hendy 2009, Kiessling 2004

Age range: base of the Dyeran to the top of the Aeronian or 515.30000 to 438.50000 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Caerfai - St Davids538.8 - 497.0Italy (Sardinia) D. bohemica (55902 55904 55905)
Dyeran515.3 - 511.2USA (Pennsylvania) D. parkeri (11113 11114)
Delamaran511.2 - 506.5Canada (New Brunswick) D. dawsoni (34599)
Amgan510.2 - 504.5Czech Republic (Bohemia) D. bohemica (67708)
Solvan - Menevian510.2 - 499.5Czech Republic Aculeodiscus bohemicus (73529)
Middle Cambrian509.0 - 497.0Italy (Iglesiente) D. bohemica (139880 139881)
St Davids509.0 - 497.0Canada (New Brunswick) D. dawsoni (34600)
St Davids509.0 - 497.0USA (Massachusetts) D. dawsoni (49340)
Aeronian440.8 - 438.5United Kingdom (England) D. sp. (453)