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Elliptocephala walcotti

Artiopoda - Redlichiida - Wanneriidae

Taxonomy
Elliptocephala walcotti was named by Lieberman (1999) [= Olenellus truemani Walcott; Fritz 1972:16, pl. 9, figs. 1–14.]. Its type specimen is GSC 27291 and is a 3D body fossil. Its type locality is Sekwi Formation - collection 73040, which is in a Cambrian marine dolomite in the Sekwi Formation of Canada.

Synonymy list
YearName and author
1999Elliptocephala walcotti Lieberman pp. 58 - 59 fig. 12.3

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
orderRedlichiidaRichter 1932
suborderOlenellina
superfamilyOlenelloidea
familyWanneriidae(Hupé 1952)
genusElliptocephala
specieswalcotti

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.

†Elliptocephala walcotti Lieberman 1999
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Diagnosis
ReferenceDiagnosis
B. S. Lieberman 1999Length (exsag.) of anterior cephalic border between lateral margins of L4 and genal spine angle equal to 50% to 60% length (sag.) of L0; L4 does not contact anterior border furrow and does not expand prominently dorsally; plectrum not visible in dorsal view; prominent parafrontal band visible, width (tr.) near ocular lobes equal to length (sag.) medially; ocular lobe only subtly separated from extraocular area by shelf; posterior end of ocular lobes extend back to S0; S3 jaggedly convex; S3, S2, S1 and S0 conjoined medially; S2 and S3 prominently incised; S1 transverse; intergenal angle represented by distinct dorsal swelling; posterior cephalic border between intergenal angle and genal spine transverse.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: deposit feedero
Created: 2009-09-21 20:18:56
Modified: 2012-08-27 07:43:00
Source: o = order, c = class
References: Hendy et al. 2009, Aberhan et al. 2004

Age range: Early/Lower Cambrian or 538.80000 to 506.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Early/Lower Cambrian538.8 - 506.5Canada (Northwest Territories) Olenellus truemani (type locality: 156169)