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Cromus optimus

Trilobita - Phacopida - Encrinuridae

Taxonomy
Encrinuraspis optimus was named by Webby et al. (1970). Its type specimen is SUP 1295 and is a 3D body fossil. Its type locality is L126. Trilobite Hill, near Cliefden Caves, which is in an Eastonian slope shale/siltstone in the Malongulli Formation of Australia. It is the type species of Encrinuraspis.

It was recombined as Cromus optimus by Struve (1980).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1970Encrinuraspis optimus Webby et al. p. 884 figs. PI. 126, figs. 1-16
1980Cromus optimus Struve

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCheirurinaHarrington and Leanza 1957
familyEncrinuridaeAngelin 1854
subfamilyEncrinurinaeAngelin 1854
genusCromusBarrande 1852
speciesoptimus()

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.

Cromus optimus Webby et al. 1970
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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: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedg
Created: 2009-06-11 07:43:48
Modified: 2010-01-09 09:54:10
Source: g = genus, c = class
References: Aberhan et al. 2004, Hendy 2009

Age range: Eastonian or 452.70000 to 449.50000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Eastonian452.7 - 449.5Australia (New South Wales) Cromus optimus (188479) Encrinuraspis optimus (166916 192952)