PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Sphaerexochus hisingeri

Trilobita - Phacopida - Cheiruridae

Taxonomy

Sphaerexochus hisingeri was named by Warburg (1925).

Sister species lacking formal opinion data

S. arcuatus, S. dimorphis, S. filius, S. lanei, S. lorum

Synonyms

Calymene clavifrons was named by Hisinger (1840).

It was synonymized subjectively with Sphaerexochus hisingeri by Warburg (1925).

Synonymy list

Year	Name and author
1840	Calymene clavifrons Hisinger
1925	Sphaerexochus hisingeri Warburg

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Latreille 1829
subphylum	Artiopoda	(Hou and Bergstrom)

Rank	Name	Author
class	Trilobita	Walch 1771
order	Phacopida	Salter 1864
suborder	Cheirurina	Harrington and Leanza 1957
family	Cheiruridae	Hawle and Corda 1847
subfamily	Sphaerexochinae	Opik 1937
genus	Sphaerexochus	Beyrich 1845
species	hisingeri

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.

†Sphaerexochus hisingeri Warburg 1925

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Invalid names: Calymene clavifrons Hisinger 1840 [synonym]

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:

minorg

Ontogeny:

molting, addition of partsc

Environment:

marinec

Locomotion:

fast-movingc

Life habit:

low-level epifaunalc

Diet:

carnivoref

Vision:

well-developedg

Created:

2009-06-09 12:26:29

Modified:

2010-01-10 03:55:17

Source: g = genus, f = family, c = class

References: Aberhan et al. 2004, Hendy 2009, Harrington et al. 1959

Age range: base of the Keila to the top of the Sandbian or 453.90000 to 452.80000 Ma

Collections (5 total)

Time interval	Ma	Country or state	Original ID and collection number
Sandbian	458.2 - 452.8	Kazakhstan	Sphaerexochus hisingeri (80177 80180)
Keila - Oandu	453.9 - 451.8	Sweden (Dalarne)	Sphaerexochus hisingeri (73411 73855 161744)