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Amblycranium

Trilobita - Proetida - Hystricuridae

Taxonomy
Amblycranium was named by Ross (1951) [Sepkoski's age data: O Trem-u Sepkoski's reference number: 795]. Its type is Amblycranium variabile.

It was assigned to Proetida by Sepkoski (2002); and to Hystricuridae by Jell and Adrain (2002), Adrain et al. (2003).

Species
A. cornutum, A. linearus, A. populus, A. variabile (type species)

Synonymy list
YearName and author
1951Amblycranium Ross p. 64
2002Amblycranium Jell and Adrain p. 340
2002Amblycranium Sepkoski
2003Amblycranium Adrain et al. p. 559

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
familyHystricuridaeHupé 1953
genusAmblycranium

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. †Amblycranium Ross 1951
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†Amblycranium cornutum Ross 1951
†Amblycranium linearus Young 1973
†Amblycranium populus Ross 1951
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: deposit feedero
Vision: well-developedf
Created: 2009-12-19 02:34:11
Modified: 2009-12-19 04:34:11
Source: f = family, o = order, c = class
References: Whittington et al. 1997, Aberhan et al. 2004, Fortey and Owens 1999

Age range: base of the Stairsian to the top of the Blackhillsian or 483.40000 to 471.30000 Ma

Collections (12 total)


Time interval Ma Country or state Original ID and collection number
Stairsian483.4 - 481.7USA (Utah) A. cornutum (104144) A. sp. (104095 105778) A. variabile (104094)
Stairsian483.4 - 481.7USA (Idaho) A. cornutum (103822) A. sp., A. variabile, A. populus (103809) A. variabile (103825) A. variabile, A. populus (103824) Parahystricurus cornutus (106389 228261 228262)
Blackhillsian475.3 - 471.3USA (Utah) A. sp. 2, A. linearus (69261)