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Sceptaspis lincolnensis

Trilobita - Phacopida - Pterygometopidae

Pterygometopus lincolnensis was named by Branson (1909). It is not extant. Its type specimen is UC 11484c, a cephalon/head (cranidium). Its type locality is Residuary Auburn Chert Beds, east of Auburn , which is in a Turinian carbonate claystone in the Decorah Formation of Missouri.

It was recombined as Calyptaulax lincolnensis by Delo (1940); it was recombined as Sceptaspis lincolnensis by Ludvigsen and Chatterton (1982).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1909Pterygometopus lincolnensis Branson p. 46 figs. Pl. 7, figs. 17-19
1919Pterygometopus conjuens Foerste p. 396 figs. Pl. 19, fig. 19
1940Calyptaulax conjuens Delo p. 101 figs. Pl. 12, fig. 21
1940Calyptaulax lincolnensis Delo p. 104 figs. Pl. 13, figs. 5,6
1942Calliops huronensis Okulitch p. 99 figs. Pl. 1, figs. 7-9.
1942Calyptaulax ottawanus Okulitch p. 102 figs. pl. 1, f. 2-3
1947Calyptaulax calderi Wilson p. 58 figs. Pl.10 f.9, 10.
1982Sceptaspis lincolnensis Ludvigsen and Chatterton p. 2194

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderPhacopinaStruve 1959
superfamilyPhacopoideaHupe 1953
familyPterygometopidaeReed 1905
subfamilyEomonorachinaePillet 1954

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.

Sceptaspis lincolnensis Branson 1909
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Invalid names: Calliops huronensis Okulitch 1942 [synonym], Calyptaulax calderi Wilson 1947 [synonym], Calyptaulax conjuens Foerste 1919 [synonym], Calyptaulax ottawanus Okulitch 1942 [synonym]
No diagnoses are available
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: Aberhan et al. 2004, Fortey and Owens 1999, Hendy 2009

Age range: base of the Turinian to the top of the Edenian or 457.30000 to 450.20000 Ma

Collections (21 total)

Time interval Ma Country or state Original ID and collection number
Turinian457.3 - 453.8USA (Missouri) Pterygometopus lincolnensis (type locality: 175724)
Blackriveran457.3 - 449.6USA (Illinois, Iowa) Sceptaspis lincolnensis (23789 23790 23791 23792)
Blackriveran457.3 - 449.6USA (Iowa/Wisconsin) Sceptaspis lincolnensis (23119 23120)
Blackriveran - Rocklandian457.3 - 449.6USA (Minnesota) Sceptaspis lincolnensis (23276)
Kirkfieldian457.3 - 449.6USA (Illinois, Iowa) Sceptaspis lincolnensis (23797 23798)
Rocklandian457.3 - 449.6USA (Iowa/Wisconsin) Sceptaspis lincolnensis (23116)
Rocklandian - Kirkfieldian457.3 - 449.6Canada (Northwest Territories) Calyptaulax lincolnensis (24635)
Rocklandian - Shermanian457.3 - 449.6USA (Minnesota) Sceptaspis lincolnensis (23277)
Shermanian457.3 - 449.6USA (Illinois, Iowa) Sceptaspis lincolnensis (23799 23800 23801)
Shermanian457.3 - 449.6USA (Minnesota) Sceptaspis lincolnensis (23278)
Chatfieldian453.8 - 451.0Canada (Ontario) Calyptaulax calderi (26273)
Edenian451.0 - 450.2Canada (Northwest Territories) Calyptaulax lincolnensis (24636)
Edenian451.0 - 450.2USA (Minnesota) Sceptaspis lincolnensis (23280)
Edenian451.0 - 450.2Canada (Quebec) Sceptaspis lincolnensis (163865)