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Alokistocare subcoronatum

Artiopoda - Ptychopariida - Alokistocaridae

Taxonomy
Conocephalites subcoronatus was named by Hall and Whitfield (1877). Its type specimen is USNM 15442 and is a 3D body fossil. It is the type species of Alokistocare.

It was recombined as Ptychoparia subcoronata by Walcott (1886), Walcott (1891); it was recombined as Alokistocare subcoronatum by Lorenz (1906), Walcott (1916), Resser (1935), Palmer (1954), Sundberg (1999).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1877Conocephalites subcoronatus Hall and Whitfield p. 237 figs. pi. 2, fig. 1
1886Ptychoparia subcoronata Walcott figs. pi. 28, fig. 4
1891Ptychoparia subcoronata Walcott p. 96 figs. fig. 6
1906Alokistocare subcoronatum Lorenz p. 62
1916Alokistocare subcoronatum Walcott p. 187 figs. pi. 25, fig. 2
1935Alokistocare subcoronatum Resser p. 6
1954Alokistocare subcoronatum Palmer p. 72 figs. Plate 15, figure 8
1999Alokistocare subcoronatum Sundberg pp. 1132 - 1138 figs. Figures 5.1-5.7, 6.1-6.14, 7

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyAlokistocaridaeResser 1939
genusAlokistocareLorenz 1906
speciessubcoronatum(Hall and Whitfield 1877)

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.

Alokistocare subcoronatum Hall and Whitfield 1877
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Diagnosis
ReferenceDiagnosis
F. A. Sundberg 1999Glabella with a bluntly rounded to rounded frontal lobe. Anterior border concave, long (27 ± 3 percent cranidial length), wide (86 ± 7 percent cranidial width). Fixigena moderately wide (62 ± 4 percent glabellar width), posterior area of fixigena broad (51 ± 6 percent glabellar width). Circular medial swelling on the preglabellar area and crossing onto the anterior border.
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
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-02 14:41:20
Modified: 2009-06-02 16:41:20
Source: g = genus, f = family, c = class
References: Aberhan et al. 2004, Hendy 2009

Age range: Middle Cambrian or 506.50000 to 497.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Middle Cambrian506.5 - 497.0USA (Utah) Alokistocare subcoronatum (64529)