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Encrinurus (Nucleurus)

Artiopoda - Phacopida - Encrinuridae

Synonymy list
YearName and author
1986Encrinurus (Nucleurus) Ramsköld
1990Nucleurus Edgecombe and Chatterton pp. 4-5
2002Nucleurus Jell and Adrain p. 412
2002Nucleurus Sepkoski

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyEncrinuridaeAngelin 1854
subfamilyEncrinurinaeAngelin 1854
genusEncrinurusEmmrich 1844
subgenusNucleurus

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.

Subg. †Encrinurus (Nucleurus) Ramsköld 1986
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Diagnosis
ReferenceDiagnosis
L. Ramsköld 1986Glabella relatively short and wide. Anterior cranidial border with nine to fourteen tubercles, usually 10-12. Tubercles on fixed cheek along rachial furrow equal in size or slightly larger than other fixed cheek tubercles. 1L usually small, ridge-shaped, set well below 2 L, never tuberculate abaxially. Genal angle rounded or with a tiny spine. Labral plate with wide rhynchos not reaching level anteriorly with labral suture, posterior border of small to medium length. No thoracic axial spines. Pygidium shor and wide, non-mucronate. 7^2-10^1 pleural ribs. Posterior pleurae commonly merged to form a "loop". R/P ratio 1·8-2·5.
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
Adult height: 1.0 to < 10g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedg
Created: 2009-06-09 12:39:28
Modified: 2010-01-09 08:44:57
Source: g = genus, c = class
References: Aberhan et al. 2004, Harrington et al. 1959

Age range: Raikkula or 440.80000 to 438.80000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Raikkula440.8 - 438.8Latvia Encrinurus abyssalis (13722)