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Asaphus expansus

Trilobita - Asaphida - Asaphidae

Taxonomy
Entomostracites expansus was named by Wahlenberg (1821). It is the type species of Asaphus.

It was recombined as Asaphus (Asaphus) expansus by Hansen and Nielsen (2003); it was recombined as Asaphus expansus by Brongniart (1822), Dalman (1827), Nielsen (1995), Jell and Adrain (2002) and Ivantsov (2003).

Sister species lacking formal opinion data
A. delfinus, A. laticaudatus

Synonymy list
YearName and author
1821Entomostracites expansus Wahlenberg pp. 25-27
1822Asaphus expansus Brongniart
1827Asaphus expansus Dalman pp. 240-242 figs. Pl. 3 f. 3a-d
1995Asaphus expansus Nielsen pp. 77-80 figs. 60-61 , 65
2002Asaphus expansus Jell and Adrain p. 345
2003Asaphus (Asaphus) expansus Hansen and Nielsen
2003Asaphus expansus Ivantsov p. 271 figs. pl. 2 f. 1-5; pl. 21 f. 9

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
superfamilyAsaphoideaSalter 1864
familyAsaphidaeBurmeister 1843
subfamilyAsaphinaeBurmeister 1843
genusAsaphusBrongniart 1822
speciesexpansus()

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.

†Asaphus expansus Wahlenberg 1821
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-08 11:40:13
Modified: 2009-06-08 13:42:14
Source: g = genus, f = family, o = order, c = class
References: Hendy et al. 2009, Hendy 2009, Aberhan et al. 2004

Age range: base of the Kunda to the top of the Arenigian or 469.20000 to 468.10000 Ma

Collections (20 total)


Time interval Ma Country or state Original ID and collection number
Arenigian478.6 - 468.1Russian Federation Asaphus expansus (37830)
Hunderum471.8 - 466.0Sweden Asaphus expansus (198047 198053)
Kunda469.2 - 464.3Russian Federation (Novgorod Oblast) Asaphus expansus (235857)
Kunda469.2 - 464.3Latvia Asaphus expansus (207277)
Kunda469.2 - 464.3Sweden Asaphus expansus (188217 188225 188226 188228 188229 188230 188233 188268 188270 188283)
Kunda469.2 - 464.3Russian Federation Asaphus expansus (157143 157146 157147 169215)
Kunda - Aseri469.2 - 460.9Russian Federation (Kostroma oblast) Asaphus expansus (235820)