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Toxochasmops (Toxochasmops) extensus

Trilobita - Phacopida - Pterygometopidae

Taxonomy
Trilobites extensus was named by Boeck (1838).

It was recombined as Chasmops extensa by Bruton and Owen (1979); it was recombined as Chasmops extensus by Hurst (1979); it was recombined as Toxochasmops extensus by Owen and Harper (1982); it was recombined as Toxochasmops (Toxochasmops) extensus by Roomusoks (1998).

Sister species lacking formal opinion data
T. cognitus

Synonymy list
YearName and author
1838Trilobites extensus Boeck
1979Chasmops extensa Bruton and Owen
1979Chasmops extensus Hurst
1982Toxochasmops extensus Owen and Harper
1998Toxochasmops (Toxochasmops) extensus Roomusoks

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
RankNameAuthor
orderPhacopidaSalter 1864
suborderPhacopinaStruve 1959
superfamilyPhacopoideaHupe 1953
familyPterygometopidaeReed 1905
subfamilyChasmopinaePillet 1954
genusToxochasmopsMcNamara 1979
subgenusToxochasmopsMcNamara 1979
speciesextensus(Boeck 1838)

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.

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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivoresubo
Vision: well-developedf
Created: 2009-06-11 18:42:15
Modified: 2009-12-19 04:28:20
Source: f = family, subo = suborder, c = class
References: Fortey and Owens 1999, Aberhan et al. 2004, Hendy 2009

Age range: base of the Marshbrookian to the top of the Nabala or 455.00000 to 449.90000 Ma

Collections (22 total)


Time interval Ma Country or state Original ID and collection number
Soudleyan - Marshbrookian458.4 - 454.0Norway (Oslo) Toxochasmops extensus (2762 3252)
Marshbrookian - Actonian455.0 - 453.0Norway (Hadeland) Toxochasmops extensus (2761 166925 166926 166927 166931 166933 166936 166940 166943 167368 167370 167371 167396 167397 167398 167416 167417)
Actonian - Onnian454.0 - 449.5Norway (Oslo) Toxochasmops extensus (3253 3254)
Rakvere - Nabala451.8 - 449.9Norway (Baerum) Toxochasmops extensus (163195)