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Elrathina parallela

Artiopoda - Ptychopariida

Taxonomy
Elrathina parallela was named by Rasetti (1951). Its type specimen is USNM 116279 and is a 3D body fossil.

Sister species lacking formal opinion data

Synonymy list
YearName and author
1951Elrathina parallela Rasetti pp. 222-223 figs. pl. 33 f. 19-22
1989Elrathina parallela Young and Ludvigsen p. 24 figs. Plate 9, figures 8-13
2017Elrathina parallela Geyer and Peel fig. 6.15

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
EcdysozoaAguinaldo et al. 1997
Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
suborderPtychopariinaRichter 1933
superfamilyPtychopariaceaMatthew 1887
genusElrathinaResser 1937
speciesparallela

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.

Elrathina parallela Rasetti 1951
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Diagnosis
ReferenceDiagnosis
G. A. Young and R. Ludvigsen 1989A species of Elrathina with a narrow glabella. Is to 3s furrows long and shallow. Occipital ring semielliptical, bearing large median tubercle. Anterior border long, convex, strongly curved. Palpebral lobe very short, narrow. Eye ridge weak or absent. Anterior branches of facial suture convergent, convex. Cranidium smooth; smallest specimens bear granulate prosopon.
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Ribbing: noneg
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingg
Life habit: epifaunalg
Diet: detritivoreg
Created: 2008-10-19 08:19:25
Modified: 2009-10-08 00:45:07
Source: g = genus, c = class
References: Aberhan et al. 2004, Caron and Jackson 2008

Age range: base of the Wuliuan to the top of the Delamaran or 506.50000 to 505.30000 Ma

Collections (7 total)


Time interval Ma Country or state Original ID and collection number
Delamaran509.7 - 505.3Canada (British Columbia) Elrathina parallela (225256)
Solvan508.2 - 504.5Canada (Newfoundland and Labrador) Elrathina parallela (10824 10825 10842 10849 10853)
Wuliuan - Topazan506.5 - 504.5Mexico Elrathina parallela (236858)